Spatial distributions and enantiomeric signatures of DDT and its metabolites in tree bark from agricultural regions across China

Niu, Lili; Xu, Chao; Zhang, Chunlong; Zhou, Yuting; Zhu, Siyu; Liu, Weiping

doi:10.1016/j.envpol.2017.05.055

Cited by 19 publications

(5 citation statements)

References 36 publications

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“…Consistent results were observed by correlation analysis for the 22 OCPs, with compounds within the same type significantly correlated with each other (Table S11). Since DDTs, HCHs, and CHLs and Ends were all mixtures of parent compounds and their metabolites (Da et al, 2014;Fang et al, 2016;Niu et al, 2017;Rahman et al, 2018;Sun et al, 2018b), the above results further verified that the main sources of them were of historical usage.…”

Section: Sources and Fate Analysissupporting

confidence: 61%

A national-scale characterization of organochlorine pesticides (OCPs) in intertidal sediment of China: Occurrence, fate and influential factors

Luan

Guo

et al. 2020

Environmental Pollution

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Organochlorine pesticides (OCPs) have been restricted for application for about 30 years in China. Intertidal zone is a sink for anthropogenic pollutants, and to better understand the current pollution status of OCPs in China, 324 surface sediment samples collected from 14 typical intertidal zones of China were analyzed for 22 OCPs. The total concentrations of OCPs ranged from 0.051 to 4141.711 ng/g, with DDTs and HCHs being the dominant components. Seasonal variations were not significant for most intertidal zones (p > 0.05), while significant spatial variations (p < 0.05) were found among 14 intertidal zones, with the highest OCPs concentrations detected in Jiulong Jiang (JLJ). The OCPs concentrations in intertidal sediments would rarely to frequently cause adverse biological effects and DDTs were the major threat. Apart from the historical usage of technical DDT and lindane, current usage of technical DDT and HCH were also implied, especially for intertidal zones such as Beidaihe (BDH) and Yingluo Wan (YLW). PCA analysis indicated that compounds within the same type of OCPs were from similar source, while different types of OCPs were generally from different sources and not used together. Our results further indicated that OCPs together with organic particles entered into the intertidal zones mainly through river input.

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Section: Sources and Fate Analysissupporting

confidence: 61%

A national-scale characterization of organochlorine pesticides (OCPs) in intertidal sediment of China: Occurrence, fate and influential factors

Luan

Guo

et al. 2020

Environmental Pollution

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“…Compared with previous studies carried out in China, ∑HCHs (16.96±6.37 ng g -1 ) in the barks of the MRHR were higher than those detected in tree barks of rural China (5.7±12 ng g -1 ), the upper Yellow River (median = 10 ng g -1 ), Yunnan Province (0.10±0.028 ng g -1 ), and the Tibetan Plateau (2.7±2.0 ng g -1 ) [16,[30][31][32]. ∑DDTs in the barks (1.87±0.50 ng g -1 ) were lower than those detected in rural China (5.6±6.5 ng g -1 ), upper Yellow River (median = 110 ng g -1 ), southern Jiangsu Province (6.6±3.5 ng g -1 ), and even the Tibetan Plateau (11±9.3 ng g -1 ), but were higher than those detected in Yunan Province (0.3±0.42 ng g -1 ) [16,20,29,31]. Concentrations of HCB (0.47±0.14 ng g -1 ) were lower than those detected in the upper Yellow River (median = 9.9 ng g -1 ), but were comparable with those in Southern Jiangsu Province (0.79±0.34 ng g -1 ) and Tibetan Plateau (0.32±0.14 ng g -1 ) [16,29,31].…”

Section: Concentrations Of Ocps In the Tree Barksmentioning

confidence: 58%

“…The Huaihe River Basin, located in the transition zone between the southern and northern climates of China, drains an area of 270,000 km 2 , serving about 190 million residents [18]. The Huaihe River Basin is adjacent to the middle-lower Yangtze Plain (MLYP), which is one of the most populous and economically developed, as well as the most POPs-contaminated regions in China [19][20][21]. Hostage to the prevailing southeast monsoon, POPs can migrate from the MLYP to the adjacent Huaihe River Basin through a series of geochemical behaviors, i.e., re-volatilization from the soil, atmospheric transportation, and deposition, or the so-called "grasshopper effect" [22].…”

Section: Introductionmentioning

confidence: 99%

Air-Soil Exchange of Organochlorine Pesticides in a Traditionally Agricultural Region in China: Base on the Bark/Air Partitioning Model

Wang,

Wu,

Yuan

2024

Pol. J. Environ. Stud.

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Willow barks were collected for OCP analyses in the middle reach of the Huaihe River (MRHR), China. ∑OCPs in the tree barks were 16.00-50.35 ng g -1 (mean: 27.60±7.48 ng g -1 , dry weight). HCHs were the dominant OCPs in the bark samples. The historical usage of technical HCH and DDT considerably impacted the HCHs and DDTs in the barks. Heptachlor, Aldrin, Isodrin, etc., have never been used in China, but they were frequently detected in the barks, indicating their unknown usage or atmospheric transportation from other source regions. Volumetric air concentrations of OCPs were estimated using a model for bark/air partitioning. Calculated air concentrations of ΣDDTs and ΣHCHs were 0.16±0.04 and 10.38±4.13 ng m -3 , respectively. The results of air-soil exchange were: HCB, HCHs, and Heptachlor presented net volatilization; DDTs preferred net deposition; Endosulfan-I and Endosulfan-II might be in equilibrium or presented a weak trend of deposition; and Aldrin was in equilibrium.

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“…se prohibió la producción de plaguicidas persistentes, como el DDT y el Paratión, entre otros, estos productos siguen teniendo impacto en el medio ambiente, ya que cantidades apreciables de sus residuos permanecen retenidos en el suelo, lodos, atmósfera y biota (Harrey et al, 1995;Harner et al, 1999;Williams y Guang, 2000;Zhang et al, 2011;Mishra et al, 2012;Yang et al, 2012;Yingxin et al, 2012;Yang et al, 2013;Zhang et al, 2013;Niu et al, 2017).…”

Section: Introductionunclassified

Relación de díeldrin y propiedades del suelo en la Comarca Lagunera, México

Carrillo

Ortega

Torres

et al. 2017

Remexca

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ResumenRecientemente se han reportado residuos de plaguicidas en el ambiente como resultado de las aplicaciones de estos productos durante varias décadas. A nivel mundial se presentan problemas atribuidos a los efectos de la contaminación por plaguicidas sobre los recursos naturales; sin embargo, en México, no existen suficientes estudios de contaminación por plaguicidas. El objetivo fue evaluar la presencia de plaguicidas en suelos de siete localidades de cinco municipios de la Comarca Lagunera en el estado de Coahuila, se realizó un muestreo de suelos a cinco profundidades (0-8, 8-23, 23-38, 38-53 y 53-68 cm) a razón de una muestra compuesta por hectárea para determinar el grado de contaminación del suelo por plaguicidas. Se utilizó el método soxhlet para la extracción de plaguicidas en la muestra y un Kuderna Danish, para la concentración. Se utilizó un cromatografó de gases. Se encontró que el díeldrin fue el único plaguicida organoclorado presente en los suelos estudiados; las capas superficiales del suelo (0-8 y 8-23 cm) mostraron las mayores concentraciones de díeldrin. El AbstractPesticide residues have recently been reported in the environment as a result of applications of these products for several decades. Globally, there are problems attributed to the effects of pesticide contamination on natural resources; however, in Mexico, there are not enough studies of pesticide contamination. The objective was to evaluate the presence of pesticides in soils of seven localities of five municipalities of the Comarca Lagunera in the state of Coahuila, a soil sampling at five depths (0-8, 8-23, 23-38, 38-53 and 53-68 cm) at the rate of a composite sample per hectare to determine the degree of soil contamination by pesticides. The soxhlet method was used for the extraction of pesticides in the sample and a Danish Kuderna for the concentration. Gas chromatography was used. It was found that dieldrin was the only organochlorine pesticide present in soils studied; the superficial layers of the soil (0-8 and 8-23 cm) showed the highest concentrations of dieldrin. The organic matter content, clay percentage and pH of the soil were the most influential characteristics on 1692 Rev. Mex. Cienc. Agríc. Vol.8 Núm. 8 12 de noviembre -31 de diciembre, 2017Mario García Carrillo et al.contenido de materia orgánica, el porcentaje de arcilla y el pH del suelo fueron las características que más influencia tuvieron sobre la concentración del díeldrin en el suelo, presentando los coeficientes de determinación más altos (r

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Spatial distributions and enantiomeric signatures of DDT and its metabolites in tree bark from agricultural regions across China

Cited by 19 publications

References 36 publications

A national-scale characterization of organochlorine pesticides (OCPs) in intertidal sediment of China: Occurrence, fate and influential factors

A national-scale characterization of organochlorine pesticides (OCPs) in intertidal sediment of China: Occurrence, fate and influential factors

Air-Soil Exchange of Organochlorine Pesticides in a Traditionally Agricultural Region in China: Base on the Bark/Air Partitioning Model

Relación de díeldrin y propiedades del suelo en la Comarca Lagunera, México

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