Reduced attention on restricted organochlorine pesticides, whereas still noteworthy of the impact on the deep soil and groundwater: a historical site study in southern China

Xu, Changlin; Cai, Yue; Wang, Rui; Wu, Jing; Yang, Guoyi; Lv, Yahui; Liu, Dehong; Deng, Yu; Zhu, Yaqi; Zhang, Qing; Wang, Lijun; Zhang, Shengwei

doi:10.1007/s10653-023-01761-y

Cited by 4 publications

(3 citation statements)

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“…Endosulfan sulfate pollutants will mainly be distributed in the Gucheng Street Office, Shangkou Town and their south area. In 2027, the area where the concentration is larger than 1.5 ng/L will exceed 150 km 2 , and the concentration larger than 3 ng/L will exceed 67 km 2 . HCB pollutants will mainly be distributed in Fengcheng in the west of Shouguang City and Nancha River in the northeast.…”

Section: Discussionmentioning

confidence: 99%

“…Since the 1940s, it has been widely used all over the world because of its strong insecticidal efficacy [1]. OCPs can be divided into two categories: one is chlorobenzene and its derivatives, such as dichlorodiphenyltrichloroethane (DDTs), hexachlorocyclohexane (HCHs) and hexachlorobenzene, and the other is organochlorine pesticides based on cyclopentadiene, including chlordane, heptachlor, endosulfan and so on [2][3][4][5][6][7][8][9]. OCPs have the characteristics of low volatility, stable chemical properties, not easy to decompose, long residue period, insoluble in water, soluble in fat and organic solvents, high persistence, bioaccumulation and biotoxicity [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…Although OCPs were widely banned in the 1970s and 1980s, they were still common in soil and groundwater [2][3][4][5], surface water [6][7][8][9], the atmosphere [17,18], ocean [19][20][21][22][23], river sediments [24], lakes [25], lake sediments [26], marine sediments [27], wetlands [28], snow [29], agricultural areas [30] and other environments. OCPs in animals [11,12], plants [12,13] and other organisms were detected, and human health was affected [14,15].…”

Section: Introductionmentioning

confidence: 99%

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Organochlorine Pesticides in Soil–Groundwater–Plant System in a Famous Agricultural Production Area in China: Spatial Distribution, Source Identification and Migration Prediction

Li,

Qi,

Wang

et al. 2023

Water

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Being a famous hometown of vegetables in China, Shouguang City has a long history of vegetable cultivation and is a comprehensive national commodity base for vegetables and fruits. In recent decades, with the expansion of agricultural production, the use of pesticides is increasing. Although organochlorine pesticides (OCPs) have been banned, there are still some residues in soil, groundwater and other media. The study on the migration of the OCPs in soil and groundwater is of great importance for the maintenance of food security. Using methods of hydrogeological survey, laboratory testing and numerical simulation, the spatial distribution characteristics, sources and pollution degree of OCPs in soil and groundwater were analyzed, and the migration and transformation of OCPs in soil–groundwater was dynamically simulated and predicted. The study showed that there were many kinds of OCPs residual in the soil environment. The hexachlorocyclohexane (HCHs) in the topsoil of the study area were mainly due to the use of lindane, and the main source of dichlorodiphenyltrichloroethane (DDTs) in soil was the use of DDTs in history. The contents of HCHs, DDTs and hexachlorobenzene in the topsoil of the study area were at a low level, while the content of endosulfan metabolite endosulfan sulfate was comparatively higher. In recent years, the content of organochlorine pesticides in soil has generally decreased. The indexes of OCPs in groundwater can meet the Standards for Drinking Water quality of China. It was predicted that the HCH pollutants would mainly be distributed in Gucheng Street, Shangkou Town, and its south area where the concentration exceeds 3 ng/L exceeds that of 240 km2. DDT pollutants would mainly be distributed in the east and north of Shouguang City, where the concentration beyond 0.6 ng/L exceeds that of 200 km2. Endosulfan sulfate pollutants would mainly be distributed in the Gucheng Street Office, Shangkou Town, and its south area where the concentration exceeds 1.5 ng/L will exceed that of 150 km2. Hexachlorobenzene (HCB) pollutants would mainly be distributed in Fengcheng in the west of Shouguang City and Nancha River in the northeast, where the concentration exceeds 0.2 ng/L will exceed that of 200 km2. The study enriched the monitoring data of OCPs in agricultural planting areas and provided reference for source analysis, migration prediction, and pollution prevention of OCPs.

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Section: Discussionmentioning

confidence: 99%