Dissipation and degradation of DDT, DDE and parathion in Brazilian soils

Andréa, Mara Mercedes de; Luchini, Luiz Carlos; Mello, M. H. S. H.; Tomita, Rúbia Yuri; Mesquita, Terezinha B.; Musumeci, Maria Raphaela

doi:10.1080/03601239409372864

Cited by 13 publications

(4 citation statements)

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“…Other studies have reported a decrease in the percent dissipation of pesticides under anaerobic conditions. For example, the dissipation of the insecticide DDT (dichlorodiphenyltrichloroethane) in soil with moisture contents of 75 and 100% of the WHC was 12 and 3%, respectively (Andrea et al, 1994). Ohmes et al (2000) observed that the dissipation of sulfentrazone in the field was more rapid, with a DT 50 of 25 days, when the rainfall was above normal.…”

Section: Discussionmentioning

confidence: 97%

The effects of moisture and temperature on the degradation of sulfentrazone

Martinez¹,

Silva²,

Fay³

et al. 2008

Geoderma

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This study examined the degradation of sulfentrazone in Arenic Hapludult soil, such soil being representative of regions where sulfentrazone is used in Brazil. Soil samples were supplemented with the herbicide [0.7 µg active ingredient (a.i.) g − 1 soil] and maintained at 27°C. The soil moisture content was corrected to 30, 70 or 100% of water holding capacity (WHC). Herbicide-free soil samples were used as controls. Aliquots were taken after 14, 30, 60, 120, 180 and 255 days of incubation for the quantitative analysis of sulfentrazone residues by gas chromatography. Another experiment was conducted using soil samples with and without herbicide, submitted to different temperatures of 15, 30 and 40°C, and kept at a constant value for WHC of 70% . The sulfentrazone residues were quantified by gas chromatography after 14, 30, 60 and 120 days of incubation. The potential degrader microorganisms were isolated and identified. A half-life of 172.4 days was estimated at 27°C and 70% WHC. The microorganisms identified as potential degraders of the herbicide were Acinetobacter calcoaceticus, Chrysosporium sp., Eupenicillium sp., Metarhizium sp. and Paecilomyces sp. After 120 days, temperature had no further effect (P b 0.16) on sulfentrazone degradation, and the soil moisture content had no effect on degradation at any time.

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Section: Discussionmentioning

confidence: 97%

The effects of moisture and temperature on the degradation of sulfentrazone

Martinez¹,

Silva²,

Fay³

et al. 2008

Geoderma

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“…Os segmentos animais e as amostras de solo extraídos secaram à temperatura ambiente e triplicatas de 100 mg desses materiais foram posteriormente submetidas à combustão (Biological Oxidizer OX-600) com o mesmo procedimento para solo utilizado por Andréa et al (1994). A radioatividade presente foi avaliada por ECL, para determinação da quantidade de 14 C-resíduos não extraíveis do solo e dos organismos.…”

Section: Recuperação De Simazina Do Solo E Dos Animaisunclassified

Dissipação de simazina em solo por ação de minhocas (Eisenia foetida)

Papini

Andréa

2001

Rev. Bras. Ciênc. Solo

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“…The conversion was to products other than p,p'-DDE which was not a major product under acidic conditions. Conversely, Andrea et al (1994a) attributed the exceptional DDT persistence they recorded at a Brazilian field site to the low pH of the soil, although a causative relationship was not established.…”

Section: P Hmentioning

confidence: 99%