scholarly journals OBSERVATIONS REGARDING EVALUATION OF ORGANOCHLORINE PESTICIDES BIOREMANENCE IN A SURFACE WATER

2011 ◽  
Author(s):  
Daniela Cristiana Alexandrescu
Keyword(s):  
Surface Water ◽  
Organochlorine Pesticides

scholarly journals Organochlorine Pesticides in Surface Water of Jiuxi Valley, China: Distribution, Source Analysis, and Risk Evaluation

2020 ◽  
Vol 2020 ◽  
pp. 1-8 ◽  
Author(s):  
Zheng Liu ◽  
Guanlin Zheng ◽  
Zhen Liu
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Human Health ◽  
Organochlorine Pesticides ◽  
Solid Phase ◽  
Source Analysis ◽  
Water Quality Criteria ◽  
Average Value ◽  
Sampling Points ◽  
Potential Risks

Residual levels of 11 organochlorine pesticides (OCPs) in surface water of Jiuxi Valley were determined during spring and autumn at nine sampling points to assess their contamination and potential risks. The water samples were extracted by solid-phase extraction (SPE), and OCPs were analyzed by gas chromatograph equipped with a 63Ni-ECD detector. The investigation results indicated that the concentration of total OCPs varied from 4.07 to 13.5 ng·L−1 with an average value of 7.15 ng·L−1 in spring, and from 12.5 to 30.1 ng·L−1 with an average value of 19.9 ng·L−1 in autumn. Jiuxi Valley was slightly contaminated by OCPs, and the concentrations of ΣHCHs and ΣDDTs in the river were at relatively low levels. HCHs were the main pollutant in spring, and also in autumn, and α-HCH was the main component of the HCH isomers at most sampling points. Source analysis indicated that local use of lindane or input of fresh γ-HCH contributed to the presence of HCHs. New inputs were the major sources of DDTs, aldrin, heptachlor, and endrin. The OCP levels of this investigation were within the standard limits set by a majority of the water quality standards and guidelines of China, WHO, European Union, and Canada. However, although the γ-HCH concentrations at all sampling sites, endrin concentrations at all sampling sites, and β-HCH concentrations at most sampling sites were below the human health water quality standard, and the levels of other tested OCPs (α-HCH, p,p′-DDD, p,p′-DDE, p,p′-DDT, aldrin, and heptachlor) exceeded the value of EPA-recommended water quality criteria for human health, which indicated potential risks to human health around the region.

Health Risk Assessment of Organochlorine Pesticides in a Shallow Freshwater Lake, China

2013 ◽  
Vol 864-867 ◽  
pp. 871-875 ◽  
Author(s):  
Wei Guo ◽  
Yao Feng
Keyword(s):  
Drinking Water ◽  
Surface Water ◽  
Health Risk ◽  
Organochlorine Pesticides ◽  
Risk Level ◽  
Acceptable Risk ◽  
Potential Health ◽  
Potential Health Risk ◽  
The World ◽  
Carcinogenic Effects

Organochlorine pesticides (OCPs) including Hexachlorocyclohexanes (HCHs) and dichlorodiphenyltrichloroethanes (DDTs) in surface water of Lake Baiyangdian were determined to assess the potential health risk when using as drinking water for children and adults. The concentration of HCHs and DDTs in surface water were in the range of 2.74-11.50 ng L-1 and 3.48-16.88 ng L-1, respectively. Compared with similar results reported around the world, the level of OCPs in this study was in the mid-range. The analysis of health risk indicated that risks from OCPs in most part of the lake would not be risky to human health according to the acceptable risk level, while carcinogenic effects caused by α-HCH might occur if drinking water from Nanliuzhuang (NLZ) and Laowangdian (SCD). α-HCH and β-HCH were the dominating factors for carcinogenic and non-carcinogenic risks, respectively. Risks of OCPs for children were much higher than those caused by OCPs for adults.

scholarly journals Partition distribution of selected organochlorine pesticides in water, sediment pore water and surface sediment from uMngeni River, KwaZulu-Natal, South Africa

Water SA ◽  
2018 ◽  
Vol 44 (2 April) ◽  
Author(s):  
E Gakuba ◽  
B Moodley ◽  
P Ndungu ◽  
G Birungi
Keyword(s):  
South Africa ◽  
Wastewater Treatment ◽  
Surface Water ◽  
Organochlorine Pesticides ◽  
Pore Water ◽  
Surface Sediment ◽  
Gas Chromatography Mass Spectrometry ◽  
Sediment Pore Water ◽  
Sediment Samples ◽  
Kwazulu Natal

Organochlorine pesticides (OCPs) were analysed in surface water, pore water and surface sediment samples collected from the uMngeni River, which is one of the largest rivers in the province of KwaZulu-Natal, South Africa. Liquid-liquid extraction was used to extract the analytes from water and pore water samples and soxhlet extraction was used to extract sediment samples with subsequent florisil clean-up and gas chromatography-mass spectrometry (GC-MS) analysis. Twelve selected OCPs were analysed and their total concentrations were found to range from 8.04–21.06 ng/mL, 36.06–188.43 ng/mL and 148.17–554.73 ng/g in unfiltered surface water, unfiltered pore water and surface sediment (dry weight (dw)), respectively. The results indicated that the concentrations of these selected pesticides were far higher in sediment (72%) than in pore water (25%) and water (3%). The most polluted sites were Northern Wastewater Treatment influent (NWTI) for water (Σ12 OCP = 19.41 ± 1.43 ng/mL) and Northern Wastewater Treatment effluent (NWTE) for pore water (Σ12 OCP = 166.23 ± 7.16 ng/mL) and sediment (Σ12 OCP = 495.21 ± 32.38 ng/g). The most abundant individual OCPs and their average concentrations in general in the river were p,p′-DDE in unfiltered water (1.62 ±0.22 ng/mL) and unfiltered sediment pore water (17.09 ±7.96 ng/mL), and endrin in surface sediment (55.57 ± 19.01 ng/g, dw).

ORGANOCHLORINE PESTICIDES IN THE SURFACE WATER AND SEDIMENTS OF THE PEARL RIVER ESTUARY, SOUTH CHINA

2007 ◽  
Vol preprint (2007) ◽  
pp. 1
Author(s):  
Mei Yu ◽  
Xiao Jun Luo ◽  
Shen-Jun Chen ◽  
Bi-Xian Mai ◽  
Eddy Zeng
Keyword(s):  
Surface Water ◽  
Organochlorine Pesticides ◽  
South China ◽  
River Estuary ◽  
Pearl River Estuary ◽  
Pearl River ◽  
The Pearl River Estuary ◽  
The Pearl River

Distributions of organochlorine pesticides and polychlorinated biphenyl in surface water from Bizerte Lagoon, Tunisia

2015 ◽  
Vol 56 (10) ◽  
pp. 2663-2671 ◽  
Author(s):  
Mouna Necibi ◽  
Nadia Mzoughi ◽  
Mohamed Néjib Daly Yahia ◽  
Olivier Pringault
Keyword(s):  
Surface Water ◽  
Organochlorine Pesticides ◽  
Polychlorinated Biphenyl ◽  
Bizerte Lagoon

Organochlorine Pesticides and PAHs in the Surface Water and Atmosphere of the North Atlantic and Arctic Ocean

2009 ◽  
Vol 43 (15) ◽  
pp. 5633-5639 ◽  
Author(s):  
Rainer Lohmann ◽  
Rosalinda Gioia ◽  
Kevin C. Jones ◽  
Luca Nizzetto ◽  
Christian Temme ◽  
...  
Keyword(s):  
Surface Water ◽  
Arctic Ocean ◽  
Organochlorine Pesticides ◽  
North Atlantic ◽  
The North ◽  
The North Atlantic

Concentrations, distributions, sources, and risk assessment of organochlorine pesticides in surface water of the East Lake, China

2013 ◽  
Vol 21 (4) ◽  
pp. 3041-3050 ◽  
Author(s):  
Yuyi Yang ◽  
Xiaoyan Yun ◽  
Minxia Liu ◽  
Ying Jiang ◽  
Qing X. Li ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Surface Water ◽  
Organochlorine Pesticides ◽  
East Lake ◽  
The East Lake
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