Sorption‐desorption kinetics of some organochlorine insecticides in silt‐water suspensions

Noegrohati, Sri; Hammers, W.E.

doi:10.1080/02772249209357790

Cited by 3 publications

(4 citation statements)

References 24 publications

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“…)-l,2, 3,4,10,-10-hexachloro-l,4,4a,5,6,7,8,8a-octahydro-6,7-epoxy-l,4: 5,8-dimethanonaphthalene) and p,p'-DDT [1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethylene] because it is less persistent. Several studies have shown that endosulfan may persist in field water samples somewhat longer than in pure water by binding to sediments and soil particles (Chandler and Scott, 1991; Peterson and Batley, 1991; Noegrohati and Hammers, 1992). The effects of the particle-bound endosulfan on organisms…”

Section: Introductionmentioning

confidence: 99%

Hapten synthesis and development of ELISAs for detection of endosulfan in water and soil.

Lee¹,

Skerritt²,

McAdam³

1995

J. Agric. Food Chem.

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Section: Introductionmentioning

confidence: 99%

Hapten synthesis and development of ELISAs for detection of endosulfan in water and soil.

Lee¹,

Skerritt²,

McAdam³

1995

J. Agric. Food Chem.

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“…The loss by adsorption on to the filter membrane was high (see previous section), thus it was uncertain whether the remaining endosulfan was 'removed' as bound residues or lost through adsorption on to the membrane. In other studies, endosulfan was found to bind strongly to sediment and soil, with 90% of the residue adsorbed after 1 h (Noegrohati & Hammers, 1992). A significant increase in endosulfan half-life after binding was also noted in the presence of sediments (Cotham & Bidleman, 1989).…”

Section: Filtration Of Spiked Turbid Watermentioning

confidence: 62%

“…Immunoassay is one of the few analytical methods that allow residues in water samples to be analyzed without solvent extraction or pre-concentration. Filtration and centrifugation have been commonly used in studies of the distribution of pesticide residues in aqueous and sediment compartments (Peck et al, 1980;Barriuso & Valvet, 1992;Noegrohati & Hammers, 1992;Ankley et al, 1994). Only filtration would be practical for field use, but it is critical to establish a suitable filter that provides an effective separation of dissolved and particle-bound pesticide residues.…”

Section: Introductionmentioning

confidence: 99%

Immunoanalysis and separation of dissolved from particle‐bound pesticide residues

Lee

Skerritt

1998

Food and Agricultural Immunology

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A small-volume filtration method was developed for use in the analysis of total, bound and dissolved residues of four agrochemicals which differed in physico-chemical properties, in turbid water. Low immunoassay recoveries of molinate, chlorpyrifos and endosulfan (but not diuron) in highly turbid water samples suggested that the antibodies were unable to recognize particle-bound residues. However, in samples of moderate or low turbidity, the results indicated that the data obtained by immunoassay s may approximate the total residue load in samples, especially if the samples are filtered through a non-absorptive membrane. The adsorption pattern of each membrane was different for each pesticide, and related to their water solubilities and partition coefficients. A syringe filter with an aluminium oxide membrane was more suitable than one with cellulose acetate, polyvinylidene difluoride or polytetrafluoroethylene for filtration of small volumes of water for separation of the dissolved residues, and removal of the residue that desorbed during filtration, without losses of the pesticide on to the membrane. This method should facililate ecotoxicological analysis by enabling the direct analysis of agrochemicals by immunoassay in field water samples.

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“…A good correlation between the level of OCPs (chlordanes, DDT and its related compounds) and the total organic carbon of the soils was reported by Lee et al [9]. Based on the similar organic matter and organic carbon concentration observed between soil in the GMU field research station and soil in Segara Anakan village, Klaces, it is expected that their dissipation and degradation pattern in this soil environment will be the same [27]. The soil temperature in the GMU field research station was constant, and the surface temperature was 31.6 l 0.78C, while sub-surface temperature (20 cm depth) was 29.9 l 0.48C.…”

Section: Dissipation and Degradation Pattern Of Soil-applied Ocps In mentioning

confidence: 63%

Fate and Behavior of Organochlorine Pesticides in the Indonesian Tropical Climate: A Study in the Segara Anakan Estuarine Ecosystem

Noegrohati¹,

Narsito²,

Hadi³

et al. 2008

CLEAN Soil Air Water

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The fate and behavior of organochlorine pesticides (OCPs) in the Segara Anakan Estuarine ecosystem was studied in the Indonesian tropical climate, which is characterized by heavy rainfall in the rainy season and low rainfall in the dry season. Since OCPs have high affinity for soil, a field study on the dissipation and degradation pattern of soil-applied 1,1,1-trichloro-2,2-bis (4-chlorophenyl) ethane (p,p9-DDT) and 1,1-dichloro-2,2-bis (4-chlorophenyl) ethylene (p,p9-DDE) as model OCPs was carried out. They occurred at a faster rate in the biphasic mode in wet conditions and at a slower rate in dry conditions. In wet conditions, the conversion from p,p9-DDT to p,p9-DDE and p,p9-DDD (1,1-dichloro-2,2-bis (4-chlorophenyl) ethane) was governed by a parallel reaction. In dry conditions, only p,p9-DDE was formed. The fate and behavior of OCPs in sediment estuary are similar to those in soil under wet conditions, except that their sorption-desorption constants are influenced by estuarine surface water salinity. In the dry season, due to high salinity, the sediment acts as an OCP sink and a secondary source for the ecosystem, causes higher OCP concentration of local bio-monitors, i. e., Geloina spp. and Mugil spp. In the rainy season, high water inflow washed the desorbed OCP pesticides out of the estuarine ecosystem, and caused lower concentrations of bio-monitors. A risk evaluation for the uptake of OCP pesticides during the dry season suggests that adult fish meal consumers are safe, but risk management is required for pregnant woman.

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Sorption‐desorption kinetics of some organochlorine insecticides in silt‐water suspensions

Cited by 3 publications

References 24 publications

Hapten synthesis and development of ELISAs for detection of endosulfan in water and soil.

Hapten synthesis and development of ELISAs for detection of endosulfan in water and soil.

Immunoanalysis and separation of dissolved from particle‐bound pesticide residues

Fate and Behavior of Organochlorine Pesticides in the Indonesian Tropical Climate: A Study in the Segara Anakan Estuarine Ecosystem

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