Occurrence and depositional history of organochlorine pesticides in the sediments of the Zayandehrud River in the arid region of Central Iran

Varnosfaderany, Mohammad Nemati; Soffianian, Alireza; Mirghaffari, Nourollah; Gu, Zhaoyan; Chu, Guoqiang

doi:10.1016/j.chemosphere.2020.126847

Cited by 15 publications

(2 citation statements)

References 45 publications

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“…Replacements for the use of DDT focused on a variety of other halogenated small molecules (Figure 1, Category II), including dicofol (Yin et al, 2017), dieldrin, heptachlor, chlordane, and mirex (Varnosfaderany et al, 2020). Although these compounds maintained high efficacy against a variety of pests, they were nonetheless abandoned due to their high toxicity (Martyniuk et al, 2020), including suspected genotoxic damage to children (Anguiano-Vega et al, 2020), and suspected carcinogenic effects (Suarez-Torres et al, 2020).…”

Section: Review Of Pesticide Categoriesmentioning

confidence: 99%

Fluorescence-Based Sensing of Pesticides Using Supramolecular Chemistry

Levine

2021

Front. Chem.

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The detection of pesticides in real-world environments is a high priority for a broad range of applications, including in areas of public health, environmental remediation, and agricultural sustainability. While many methods for pesticide detection currently exist, the use of supramolecular fluorescence-based methods has significant practical advantages. Herein, we will review the use of fluorescence-based pesticide detection methods, with a particular focus on supramolecular chemistry-based methods. Illustrative examples that show how such methods have achieved success in real-world environments are also included, as are areas highlighted for future research and development.

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Section: Review Of Pesticide Categoriesmentioning

confidence: 99%

Fluorescence-Based Sensing of Pesticides Using Supramolecular Chemistry

Levine

2021

Front. Chem.

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“…[ 5–10 ] Because of their uses for the control of vector‐transmitted diseases and agriculture purposes in developing countries, the levels of HCHs and DDTs have been found to range from 0.13 to 100.6 and 0.017 to 4140 ng/g, respectively. [ 11–34 ] In Taiwan, the levels of HCHs and DDTs have been reported to range from 0.57 to 14.5 and 0.21 to 11.4 ng/g, respectively. [ 35–37 ] Conventionally, OCPs in sediments are measured using a gas chromatography system equipped with an electron capture detector (GC‐ECD).…”

Section: Introductionmentioning

confidence: 99%

Detection of organochlorine pesticides in estuarine sediments of protected wetlands in Taiwan using high‐resolution gas chromatography/high‐resolution mass spectrometry and gas chromatography‐electron capture detector

Lai

Chi

Zhou

et al. 2023

J Chinese Chemical Soc

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Trace residues of organochlorine pesticides (OCPs) in estuarine surface sediments were investigated at three protected wetlands in southern Taiwan using high‐resolution gas chromatography/high‐resolution mass spectrometry (HRGC/HRMS) and gas chromatography‐electron capture detector (GC‐ECD). This study facilitates the development of new strategies for investigating OCPs, particularly at background levels. Linear relationships were obtained between total OCP concentrations (∑OCP), as analyzed by HRGC/HRMS, and the sediment's total organic carbon (TOC) and water content. It contrasted with the results acquired by GC‐ECD, where no significant relationship was found. GC‐ECD is a rugged option for daily routine practice, particularly in cases of patterns yielded by GC‐ECD is clear; the HRGC/HRMS method provides more reliable qualitative and quantitative capabilities and is highly recommended for studying the fate of OCPs and carrying out risk assessments. The average ∑OCP of these three wetlands by HRGC/HRMS was found in a range of 0.214 to 1.049 ng/g dry weight. The highest OCP level might be attributed to associated irrigation systems receiving massive discharges of domestic sewage from an urban area upstream of the wetland. The ratio of dichlorodiphenyltrichloroethane (DDT) to its metabolites indicated that the DDT residue in these areas was from aged input. According to sediment quality guidelines, adverse ecotoxicological effects of OCPs upon sediments were not expected in these protected wetlands.

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