Organochlorine pesticide residues in sediment and water from Nairobi River, Kenya: levels, distribution, and ecological risk assessment

Tea plantations have used many synthetic chemicals to ensure performance and control of pests. This has led to increased contamination of soils and reduced tea growth. We assessed the levels of heavy metals, including Cd, Cr, Pb, Cu, Ni, Zn, Hg, As, and pesticide residues, such as HCHs, biphenyl chrysanthemum ester, methamidophos, imidacloprid, permethrin, in the soil of tea plantations of Taiwan, Tibet, Guangdong, and Fujian. The Potential Ecological Risk Index and the Nemerow comprehensive pollution index were used to analyze the data. The results showed that risk indices in Tibet, Guangdong and Fuzhou were considered as moderate ecological harm level. Ecological risk assessment index of Anxi organic and Anxi conventional tea gardens suggested a “low” risk level. The Nemerow comprehensive pollution indices for soil pesticide residues in the tea plantations of Taiwan, Tibet, Anxi organic and Anxi conventional were considered mild. Guangdong and Fuzhou had values suggesting “slight pollution” levels. According to National Soil Environmental Quality Standard (GB15618-1995), soil in tea plantations in Taiwan, Tibet, and Anxi conventional matched the national first grade of soil quality and those from Guangdong, Fuzhou, and Anxi organic tea garden matched the national second grade.

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A reliable LC-MS/MS-based method for trace level determination of 50 medium to highly polar pesticide residues in sediments and ecological risk assessment

Analytical and Bioanalytical Chemistry ◽

10.1007/s00216-019-02188-0 ◽

2019 ◽

Vol 411 (30) ◽

pp. 7981-7996 ◽

Cited By ~ 9

Author(s):

Maria Vittoria Barbieri ◽

Cristina Postigo ◽

Luis Simón Monllor-Alcaraz ◽

Damià Barceló ◽

Miren López de Alda

Keyword(s):

Risk Assessment ◽

Ecological Risk ◽

Ecological Risk Assessment ◽

Pesticide Residues ◽

Trace Level ◽

Trace Level Determination

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Assessment of human health risk from organochlorine pesticide residues in Cidade dos Meninos, Duque de Caxias, Rio de Janeiro, Brazil

Cadernos de Saúde Pública ◽

10.1590/s0102-311x2008000400005 ◽

2008 ◽

Vol 24 (4) ◽

pp. 755-766 ◽

Cited By ~ 15

Author(s):

Carmen Ildes R. Fróes Asmus ◽

Herling Gregorio Aguilar Alonzo ◽

Marisa Palácios ◽

Alexandre Pessoa da Silva ◽

Maria Isabel de Freitas Filhote ◽

...

Keyword(s):

Risk Assessment ◽

Human Health ◽

Organochlorine Pesticide ◽

Pesticide Residues ◽

Rio De Janeiro ◽

Health Hazard ◽

Human Health Risk ◽

Toxic Substances ◽

Risk Levels ◽

Organochlorine Pesticide Residues

This article presents the results of a heath risk assessment in Cidade dos Meninos, an area contaminated with organochlorine pesticide residues located in the county (municipality) of Duque de Caxias, Rio de Janeiro State, Brazil. The Agency for Toxic Substances and Disease Registry (ATSDR) risk assessment methodology was applied. The following organochlorine compounds exceeded the established limits and were considered target pollutants: HCH and its isomers (in eggs, milk, and soil); DDT and its metabolites; trichlorobenzenes; trichlorophenols; dioxins and furans (eggs and soil). For all the substances studied (with the exception of trichlorophenols), the estimated doses exceeded the minimum risk levels for chronically exposed children and adults. According to the ATSDR classification, the area was considered an "urgent public health hazard" because of its high and serious exposure to substances that are dangerous to human health.

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