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Passive Atmospheric Sampling of Organochlorine Pesticides, Polychlorinated Biphenyls, and Polybrominated Diphenyl Ethers in Urban, Rural, and Wetland Sites along the Coastal Length of India

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TLDR
Passive air samplers consisting of polyurethane foam disks were deployed concurrently at 18 locations and exposed for 6 weeks along the coastal length of India to screen for POPs in the atmosphere, and chlordanes showed high trans-/cis-chlordane (TC/CC) ratios, indicative of the current use of technical chlordane and a contribution from heptachlor usage.
Abstract
India is of prime interest due to the large past and ongoing use of pesticidal persistent organic pollutants (POPs). Rapid dissipation of POPs to the atmosphere in the tropical climate of India infers an atmospheric outflow of these chemicals. Yet data on POPs in the atmosphere of India are sparse. Passive air samplers consisting of polyurethane foam disks were therefore deployed concurrently at 18 locations and exposed for 6 weeks from July 30, 2006, to September 26, 2006, along the coastal length of India to screen for POPs in the atmosphere. The sampling sites were selected to form categories of urban, rural, and background (mangrove/wetlands) locations. Derived air concentrations (pg/m3) ranged as follows: the sum of 28 PCB congeners, 120−1080; DDTs, 16−2950; HCHs, 66−5400; chlordanes, 9−921; endosulfans, 0.45−1120; and the sum of 9 PBDE congeners, 1−181. The highest levels of all the detected POPs (except endosulfan) were observed at the urban sites, indicating the dominant areas of usage and emissio...

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Citations
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Current status of persistent organic pesticides residues in air, water, and soil, and their possible effect on neighboring countries: a comprehensive review of India.

TL;DR: It can be concluded that India is one of the major contributors of global persistent organic pesticide distribution and its impact on neighboring countries and regions is highlighted.
Journal ArticleDOI

Actinobacteria: Current research and perspectives for bioremediation of pesticides and heavy metals.

TL;DR: In this paper, a review of different bioremediation strategies using actinobacteria and how they contributed to the improvement of the already existing strategies is presented. And the importance of omic studies to elucidate mechanisms and regulations that bacteria use to cope with pollutant toxicity is discussed.
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Occurrence, bioavailability and toxic effects of trace metals and organic contaminants in mangrove ecosystems: a review.

TL;DR: The present paper reviews the current knowledge on the occurrence, bioavailability and toxic effects of trace contaminants in mangrove ecosystems and highlights the major data and methodological gaps which should be addressed to refine the risk assessment of trace pollutants in manGrove ecosystems.
Journal ArticleDOI

Organochlorine pesticides (OCPs) in South Asian region: a review.

TL;DR: This document provides the historical overview and country specific environmental legislation of OCPs from the South Asian region in the context of their illegal use and storage for extended periods and still until to date.
References
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Journal ArticleDOI

An overview of brominated flame retardants in the environment.

TL;DR: In this paper, the current state of knowledge is reviewed and areas for further research recommended to improve future monitoring and risk assessment efforts, and the authors suggest that the occurrence of high concentrations of certain PBDE isomers may be sufficient to elicit adverse effects in some wildlife.
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Distribution of persistent organochlorines in the oceanic air and surface seawater and the role of ocean on their global transport and fate

TL;DR: In this paper, the atmospheric concentrations of organochlorines such as hexachlorocyclohexanes (HCHs), DDTs, chlordanes, and PCBs were determined in the air and surface water from various oceans in 1989-1990, for understanding their recent distribution and the role of ocean in the long-range atmospheric transport and fate on global terms.
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Towards a global historical emission inventory for selected PCB congeners--a mass balance approach. 1. Global production and consumption.

TL;DR: The methodology, principal uncertainties and selected results from an inventory, aiming to quantify the global production and consumption of total PCBs as well as 22 PCB congeners are presented, suggest that almost 97% of the global historical use of PCBs have occurred in the Northern Hemisphere.
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Towards a global historical emission inventory for selected PCB congeners--a mass balance approach 3. An update.

TL;DR: It is shown that the diversity of historical usage, disposal and accidental release pathways makes it an extremely difficult task to bridge the gap between consumption and emissions, resulting in an equally complex and diverse true emission pattern.
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Export of toxic chemicals – A review of the case of uncontrolled electronic-waste recycling

TL;DR: It is obvious that the environment is highly contaminated by these toxic chemicals derived from the recycling processes, especially on tracking the exposure pathways of different toxic chemicals which may affect the workers and local residents especially mothers, infants and children.
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