34 results match your criteria pp'-ddt concentrations


Impact of organochlorine pollutants on semen parameters of infertile men in Pakistan.

Environ Res 2021 04 5;195:110832. Epub 2021 Feb 5.

Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, 71003, Heraklion, Greece. Electronic address:

Male infertility is a major problem with important socioeconomic consequences. It is associated with several pathological factors, including but not limited to endocrine disruption as a result of environmental pollution and the alarming decline in sperm count over the decades is indicative of involvement of many environmental and lifestyle changes around the globe. Organochlorine pollutants such as dichlorodiphenyltrichlorethanes (DDTs), polychlorinated biphenyls (PCBs) and hexachlorobenzene (HCB) disrupt male reproductive system but the exact effect of environmental exposure on semen parameters in human is still not clear. Read More

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Does trophic level drive organic and metallic contamination in coral reef organisms?

Sci Total Environ 2019 Jun 21;667:208-221. Epub 2019 Feb 21.

Université de la Nouvelle-Calédonie, Institut de Sciences Exactes et Appliquées, EA 7484, LabEx "CORAIL", BP R4, 98851 Nouméa Cedex, New Caledonia. Electronic address:

Metallic and organic pollutants constitute a serious threat for coral reef ecosystems, potentially affecting a great number of species interacting within complex trophodynamic processes. Pesticides, PCBs and trace elements were measured on coral reef communities of three Pacific islands (Moorea, Wallis and New Caledonia) in relation with δN values, a proxy of trophic level. Several potential sources of organic matter, benthic invertebrates and fish belonging to various trophic strategies were sampled at each island. Read More

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An unnoticed issue: Organochlorine pesticides in tobacco products around the world.

Chemosphere 2019 Mar 3;219:54-57. Epub 2018 Dec 3.

Department of Theoretical and Applied Sciences, University of Insubria, Via Valleggio 11, 22100 Como, Italy.

In this work we assessed the presence of two well-known pesticides (DDT and lindane) along with their main metabolite or isomer in tobacco products from 11 countries. In 11 of the 14 samples DDTs were the dominant compounds, with maximum concentrations of pp'-DDT in Morocco cigarettes (9 ng g) and of pp'-DDE in Italian cigars (13 ng g). Moreover, the α/γ-HCH ratio was mostly lower than 1, indicating the main use of "Lindane" formulation. Read More

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Levels of organochlorine pesticides in Amazon turtle (Podocnemis unifilis) in the Xingu River, Brazil.

J Environ Sci Health B 2018 10;53(12):810-816. Epub 2018 Sep 10.

d Núcleo de Altos Estudos Amazônicos , Universidade Federal do Pará , Belém , Brazil.

Due to the toxicity and high environmental persistence of organochlorine pesticides in aquatic organisms, turtles have been studied as environment biomonitors. These animals are important sources of protein for the riverside and indigenous peoples of the Brazilian amazon. In the present study, organochlorine pesticide contamination was investigated in Podocnemis unifilis. Read More

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Assessment of DDT and Metabolites in Soil and Sediment of Potentially Contaminated Areas of Belém, Amazon Region, Brazil.

Bull Environ Contam Toxicol 2017 Jul 22;99(1):125-130. Epub 2017 Apr 22.

Environmental Section, Evandro Chagas Institute, Rodovia BR 316 Km 07, Ananindeua, Pará, Brazil.

The aim of this study was to evaluate the distribution of DDT and metabolites in surface soils and soil profiles from two areas containing deposits of obsolete pesticides in Belém, Amazon Region, Brazil. DDT and metabolites were extracted by microwave assisted extraction and analyzed by gas chromatography with electron capture detection. Concentrations of total DDT in surface soil samples ranged from 64. Read More

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Assessment of the concentrations of polycyclic aromatic hydrocarbons and organochlorine pesticides in soils from the Sarno River basin, Italy, and ecotoxicological survey by Daphnia magna.

Environ Monit Assess 2015 Feb 1;187(2):52. Epub 2015 Feb 1.

Dipartimento di Scienze della Terra, dell'Ambiente e delle Risorse, Università degli Studi di Napoli "Federico II", Via Mezzocannone 10, 80138, Naples, Italy,

We studied the contamination level of the soils of the Sarno River basin in southwestern Italy by combined acute toxicity test with Dapnia magna and chemical extraction of polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides (OCPs). For the ecotoxicological assessment, 188 samples were taken and coincided with those of a previous study (2013) where heavy metals were surveyed. For the organics assessment, 21 samples were selected nearby representative areas of elevated anthropic pressure. Read More

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February 2015

Organochlorine pesticide level differences among female inhabitants from Veracruz, Puebla and Tabasco, Mexico.

Bull Environ Contam Toxicol 2014 Aug 15;93(2):233-7. Epub 2014 Jun 15.

Institute of Forensic Medicine, University of Veracruz, SS Juan Pablo II s/n, 94290, Boca del Rio, Vercaruz, Mexico,

Organochlorine pesticides have been used in Mexico in malaria control programs and against ectoparasites. The objective of this study was to compare the levels of organochlorine pesticides: HCB, α-β-γ-HCH, pp'-DDE, op'-DDT and pp'-DDT in adipose tissue of female inhabitants from three Mexican states: Veracruz, Puebla and Tabasco. Data analyses indicated higher β-HCH levels in Puebla inhabitants. Read More

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The organochlorine pesticides residue levels in karun river water.

Jundishapur J Nat Pharm Prod 2013 13;8(1):41-6. Epub 2013 Feb 13.

Food and Drug Laboratory Research Center, Ministry of health, Tehran, IR Iran.

Background: The organochlorine pesticides (OCPs) are among the most commonly used in water streams around the world. Most of these contaminants are highly hydrophobic and persist in sediments of rivers and lakes. Studies have suggested that OCPs may affect the normal function of the human and wildlife endocrine systems. Read More

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Organochlorine pesticides in green mussel, Perna viridis, from the Cienfuegos Bay, Cuba.

Bull Environ Contam Toxicol 2012 Nov 21;89(5):995-9. Epub 2012 Sep 21.

Centro de Estudios Ambientales de Cienfuegos, Ciudad Nuclear, 59350 Cienfuegos, Cuba.

The green mussel, Perna viridis, was used to measure bioaccumulated levels of organochlorine pesticides in the marine environment of Cuba. Samples were collected in the Cienfuegos Bay between January and December 2010. The organochlorine pesticides (i. Read More

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November 2012

Persistent organic pollutants in sediment from the southern Baltic: risk assessment.

J Environ Monit 2012 Aug 29;14(8):2100-7. Epub 2012 Jun 29.

National Marine Fisheries Research Institute, Department of Food and Environmental Chemistry, 1 Kołłataja Str., 81-332 Gdynia, Poland.

The concentrations of organochlorine pesticides, PCBs, and PCDD/Fs were measured in sediment samples collected from the Gulf of Gdańsk, the Gdańsk Deep, the Vistula Lagoon and the off-shore waters in the southern Baltic Sea. The determinations were conducted in the fraction <63 μm. The highest levels of pollutants were found in sediments from the Gulf of Gdańsk and the Gdańsk Deep. Read More

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The health risk assessment of organochlorine pesticides in smoked fish products available in Szczecin, Poland.

J Environ Sci Health B 2010 Oct;45(7):658-65

Department of Toxicology, West Pomeranian University of Technology, Szczecin, Poland.

The aim of this study was to determine the concentration of organochlorine pesticides [HCH and isomers (alpha, beta, gamma), aldrin, dieldrin, endrin, heptachlor and heptachlor epoxide and DDT and its metabolites (op'-DDD, pp'-DDD, op'-DDT, pp'-DDE, pp'-DDT] in smoked fish. Analysis was made of 12 typical smoked fish products that are the most popular among customers from the city of Szczecin, Poland. Pesticide residues were found in all samples of smoked fish. Read More

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October 2010

Occurrence, distribution and possible sources of organochlorine pesticide residues in tropical coastal environment of India: an overview.

Environ Int 2008 Oct 18;34(7):1062-71. Epub 2008 Apr 18.

Department of Marine Science, University of Calcutta, 35 Ballygunge Circular Road, Calcutta 700019, India.

Organochlorine pesticides (OCPs) are an important potential component of chemical pollutants used extensively for agriculture and sanitation purposes in India as these are comparatively cheap and effective. These persistent organic compounds such as HCH isomers, DDT and its metabolites are the predominant chemical contaminants found along the Indian coast and thus constitute both alluring and grave areas of scientific research. Our objective in the paper is to provide a comprehensive account of the distribution of organochlorine pesticides in biotic and abiotic compartments of the Indian coastal environment, make some comments on their environmental sources, their movement through the food chain and possible ecotoxicological risk of health in biota including humans. Read More

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October 2008

Assessment of the genotoxic potential of benzo(a)pyrene and pp'-dichlorodiphenyldichloroethylene in Zebra mussel (Dreissena polymorpha).

Mutat Res 2008 Jan 6;649(1-2):135-45. Epub 2007 Oct 6.

Department of Biology, University of Milan, Via Celoria 26, Milan, Italy.

The single-cell gel electrophoresis (SCGE) assay and the micronucleus (MN) test were carried out with haemocytes of Zebra mussel (Dreissena polymorpha) specimens to evaluate the potential genotoxicity of benzo(a)pyrene (BaP) and pp'-dichlorodiphenyldichloroethylene (pp'-DDE, a metabolite of pp'-DDT). Mussels were exposed to three different concentrations (0.1 microg/L, 2 microg/L, 10 microg/L) of each chemical in water during 168 h (SCGE assay) and 96 h (MN test) of exposure under laboratory conditions. Read More

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January 2008

Changes in surface area and concentrations of semivolatile organic contaminants in aging snow.

Environ Sci Technol 2007 Jul;41(14):4932-7

Aquatic Ecosystem Protection Research Division, Environment Canada, 867 Lakeshore Road, Burlington, Ontario, Canada L7R 4A6.

During the winter of 1999/2000 five snowpacks at Turkey Lake Watershed east of Lake Superior were sampled immediately after falling and again after several days of aging for the analysis of specific snow surface area and the concentrations of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs). The snow surface could be determined with a relative coefficient of variation of 6% using frontal chromatography, measuring the retention of ethyl acetate, a substance with known adsorption coefficient on the ice surface. The snow surface area of fresh snow varied from 1000 to 1330 cm2/g and was higher for snow falling during colder days. Read More

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Organochlorine and organophosphorous pesticide residues in the Ouémé River catchment in the Republic of Bénin.

Environ Int 2006 Jul 13;32(5):616-23. Epub 2006 Mar 13.

Laboratoire de Biochimie et de Biologie Cellulaire, FAST/UAC, BP 526, Cotonou, Bénin.

The Ouémé River is one of the most important rivers in the Republic of Bénin. It is 510 km long and its catchment drains 75% of the country. In this study, organochlorine and organophosphorous pesticide residues were measured in more than 35 sediment samples collected on nine locations along the Ouémé River from upstream to downstream. Read More

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Effects of environmental factors on organochlorine pesticide residues in soils of the Guanting Reservoir area, China.

J Environ Sci Health B 2006 ;41(3):309-21

Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.

Topsoil samples from 56 sites around the Guanting Reservoir, China, were measured for HCH and DDT concentrations. The total soil HCH content (including alpha-, beta-, gamma-, and delta-isomers) in these soil samples ranged from 0 to 7.33 ng x g(-1), with a mean of 0. Read More

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Organochlorinated pesticides in sediments from the Lake Albufera of Valencia (Spain).

Chemosphere 2005 Sep 19;60(11):1542-9. Epub 2005 Apr 19.

Department of Construction Engineering, ETSICCP, Polytechnic University of Valencia, Camino de Vera, 14, 46022 Valencia, Spain.

Bottom sediment samples from 121 sites of the Lake Albufera of Valencia were analyzed. Dieldrin, endrin, heptachlor and op'-DDT were not detected (<0.01 ng g(-1)) in 88-93% of the sites. Read More

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September 2005

Levels of toxaphene congeners in white whales (Delphinapterus leucas) from Svalbard, Norway.

Sci Total Environ 2006 Mar 21;357(1-3):128-37. Epub 2005 Jun 21.

Department of Zoology, Norwegian University of Science and Technology, N-7491 Trondheim, Norway.

This study reports concentrations of three pesticide toxaphene congeners (CHBs; CHB-26, -50 and -62) from the blubber of ten adult, male white whales (Delphinapterus leucas) from Svalbard, Norway. The CHB congeners that occurred at the highest levels in the blubber of the white whales were, as expected, CHB-26 (4636+/-1992 (SD) ng/g l.w. Read More

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Evaluation of the concentration of HCH, DDT, HCB, PCB and PAH in the sediments along the lower stretch of Hugli estuary, West Bengal, northeast India.

Environ Int 2005 May 19;31(4):523-34. Epub 2004 Nov 19.

Water Research Institute-CNR, 25, Mornera Street, Brugheno 20047, Milan, Italy.

Detailed analyses of persistent organic pollutants (POPs) such as hexachlorocyclohexane (HCH) isomers (HCHs), dichlorodiphenyltrichloro ethane (DDT) and its metabolites (DDTs), hexachlorobenzene (HCB) and congeners of polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs) in surface sediments from the coastal estuarine environment of West Bengal, northeast India allowed the evaluation of the contamination status, distribution and possible pollution sources. HCH, DDT, HCB, PCB and PAH were identified compounds in all the samples, whereas the concentrations of chlorinated pesticides (trans-eptachlorepoxide, dieldrin, endrin, metaoxychlor and mirex) were below the detection limits and were not of great concern. The pesticides did demonstrate markedly different distributions reflecting different agricultural and domestic usage in the region. Read More

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Correlation of chlorinated pesticides concentration in semen with seminal vesicle and prostatic markers.

Reprod Toxicol 2004 Dec;19(2):209-14

Industrial Toxicology Research Centre, Post Box no. 80, M.G. Marg, Lucknow 226001, India.

Semen samples of fertile and infertile men were analysed by gas liquid chromatography (GLC) for the presence of dichlorodiphenyltrichloroethane (DDT) and its metabolites (1,1-dichloro-2,2-bis(p-chlorophenyl) ethylene) (pp'-DDE); (1,1,1-trichloro-2,2-bis(p-chlorophenyl ethane) (pp'-DDT); (1,1-dichloro-2,2 bis(p-chlorophenyl) ethane) (pp'-DDD); (1,1,1-trichloro-2-(o-chlorophenyl)-2-(p-chlorophenyl) ethane) (op'-DDT), hexachlorocyclohexane (HCH) and its isomers alpha (alpha), beta (beta), gamma (gamma), delta (delta) and aldrin. The biochemical analysis of seminal vesicle and prostatic marker was done by spectrophotometer. The concentrations of alpha-, beta-, gamma-HCH, pp'-DDE and pp'-DDD were higher in the semen of infertile than in that of fertile men. Read More

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December 2004

Persistent organochlorine pesticide levels in bovine fat from Mexico.

Food Addit Contam 2004 Aug;21(8):774-80

Institute of Forensic Medicine, University of Veracruz, SS Juan Pablo II s/n, 94290-Boca del Río, Veracruz, Mexico.

Organochlorine pesticides have been used in Mexico in agriculture as a seed dresser, in sanitation, in malaria control programmes and in livestock to combat ectoparasites. The pesticides applied drift to areas where cattle graze and plants grow. Because of their chemical stability, they accumulate in the lipid-rich tissues of the body. Read More

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Organochlorine pesticide residues in sediments of a tropical mangrove estuary, India: implications for monitoring.

Environ Int 2003 Aug;29(5):587-92

Department of Metallurgical Engineering, Jadavpur University, 700032 Calcutta, India.

The paper examines the concentrations of isomers of hexachlorocyclohexane (HCHs), dichlorodiphenyl trichloroethane and its metabolites (DDTs), alpha-endosulfan and endosulfan sulfate in surface sediment samples collected from the mouth of Hugli estuary in the vicinity of Sundarban mangrove environment, eastern part of India. An overall pattern of accumulation of these pesticides was in the order of: SigmaHCH>endosulfan sulfate>SigmaDDT>alpha-endosulfan. The concentration of these compounds was quite low. Read More

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Persistent organochlorine pesticide levels in cow's milk samples from tropical regions of Mexico.

Food Addit Contam 2003 Mar;20(3):270-5

Institute of Forensic Medicine, University of Veracruz, SS Juan Pablo II s/n 94290, Boca del Rio, Ver, Mexico.

Organochlorine pesticides have been used in agriculture as a seed dresser, in sanitation, in malaria control programmes and in livestock to combat ectoparasites. Their residues accumulate in lipid-rich tissues due to their chemical stability and persistence. In the body they circulate throughout all compartments, deposit themselves in adipose fat and can be excreted during lactation. Read More

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Distribution, fate and effects of pesticide residues in tropical coastal lagoons of northwestern Mexico.

Environ Technol 2002 Nov;23(11):1257-70

International Atomic Energy Agency, Marine Environment Laboratory, BP 800, MC98012 Monaco.

Analyses of pesticide residues in sediments, water and biota of the Altata-Ensenada del Pabellon coastal lagoon system in Sinaloa, Mexico, showed the presence of organochlorine and organophosphorus compounds. For all the compounds analysed, concentrations in sediments were higher near the points of water discharge from ponds and drainage from the agricultural area. Among the organochlorines, total DDTs displayed the largest sedimentary reservoir, followed by total endosulfans and chlorpyrifos. Read More

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November 2002

First report on chlorinated pesticide deposition in a sediment core from a small lake in central Chile.

Chemosphere 2001 Nov;45(6-7):749-57

Aquatic Systems Research Unit, EULA-Chile, Environmental Science Center, University of Concepción, Barrio Universitario, Chile.

This paper presents a first report on chlorinated pesticide deposition analyzed through sedimentary records in a small mesotrophic lake (Chica de San Pedro) in central Chile. The sediment core was sliced and dated using 210Pb, 137Cs and pollen analyses. Organochlorine pesticides were analyzed by gas chromatography with electron capture detection (GC-ECD). Read More

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November 2001

Spatial differences in persistent organochlorine pollutant concentrations between the Bering and Chukchi Seas (1993).

Mar Pollut Bull 2001 Jan-Jun;43(1-6):132-42

Environment Canada, National Water Research Institute, Canada Centre for Inland Waters, Burlington, Ont.

During August-September 1993, a joint Russian-United States expedition to the Bering and Chukchi Seas took place. Surface water samples were collected from 21 sites and separated into dissolved (duplicates) and suspended solids; 19 sediment and 6 air samples were also collected. These samples were analysed for 19 organochlorine pesticides, 11 chlorobenzenes and 113 PCB congeners. Read More

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The organochlorine contamination history of the Mersey estuary, UK, revealed by analysis of sediment cores from salt marshes.

Mar Environ Res 2001 Apr;51(3):213-27

School of Biological Sciences, University of Liverpool, Liverpool L69 7ZB, UK.

Sediment profiles in the Banks, Ince and Widnes Warth salt marshes in Northwest England contain a mappable record of historic pollution. For persistent organochlorine compounds this stretches back over 90 years. The PCB and HCH profiles can be successfully rationalised by dating methods, and they can be related to the dates of initial production and subsequent withdrawal from use of these chemicals as a result of restrictive environmental legislation. Read More

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Perinatal metabolism of dichlorodiphenyldichloroethylene in Nicaraguan mothers.

Environ Res 2001 Jul;86(3):229-37

Department of Nutrition and Department of Chemistry, Universidade de Brasilia, Brasilia, 70919, Brazil.

Umbilical cord and venous blood samples were collected at the time of delivery from 52 mothers living in urban and rural areas of the Atoya River basin, Nicaragua. In a subsample of 24 mothers that delivered by Cesarean section, abdominal adipose tissue samples were also collected, as was breast milk later in lactation. Cord and venous blood sera were analyzed for 13 organochlorine pesticides: 1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane (pp'-DDT); 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (pp'-DDE); pp'-dichlorophenyldichlorodiene (pp'-DDD); alpha-hexachlorocyclohexane (alpha-HCH); beta-hexachlorocyclohexane (beta-HCH); gamma-hexachlorocyclohexane (gamma-HCH); delta-hexachlorocyclohexane (delta-HCH); toxaphene; dieldrin; endrin; aldrin; heptachlor; and heptachlor epoxide. Read More

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Concentrations and patterns of organochlorine contaminants in white whales (Delphinapterus leucas) from Svalbard, Norway.

Sci Total Environ 2001 Jan;264(3):267-81

Department of Zoology, Norwegian University of Science and Technology, Trondheim.

Blubber was collected from live-captured, adult male white whales (Delphinapterus leucas) from Svalbard, Norway, and analysed for levels and patterns of organochlorine (OC) contaminants. The OC compounds analysed were HCB, dieldrin, sigmaHCH (alpha-HCH, beta-HCH and gamma-HCH), sigmaChl (heptachlor epoxide, oxychlordane, cis-chlordane, trans-nonachlor, and cis-nonachlor), sigmaDDT (pp'-DDT, pp'-DDE and pp'-DDD) and sigmaPCB (27 PCB congeners). The major OC compounds detected in the blubber were sigmaPCB (5103+/-1874 ng/g l. Read More

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January 2001

Concentrations of PCBs, DDTs, and TCDD equivalents in cyprinids of the Middle Po River, Italy.

Arch Environ Contam Toxicol 2000 Feb;38(2):209-16

Water Research Institute, CNR, 20047 Brugherio, Milan, Italy.

The concentrations of non-ortho-, mono-ortho-, di-ortho-substituted polychlorinated biphenyls (PCBs) and DDTs (pp'-DDT and pp'-DDE) were measured in fish and bed sediments of the Po River. Three species of cyprinids, nase (Chondrostoma söetta), chub (Leuciscus cephalus), and barbel (Barbus plebejus), were captured in the major Italian river, upstream and downstream from the confluence of the Lambro River. The two carnivorous species, chub and barbel, were found to be the most contaminated, showing muscle tissue concentrations up to eightfold higher than the corresponding upstream fish. Read More

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February 2000