Enantioselective Degradation and Chiral Stability of Glufosinate in Soil and Water Samples and  Formation of 3-Methylphosphinicopropionic Acid and N-Acetyl-glufosinate Metabolites

Various prevalence studies onLeptospirain animals and humans, as well as environmental samples, had been conducted worldwide, including Malaysia. However, limited studies have been documented on the presence of pathogenic, intermediate, and saprophyticLeptospirain selected animals and environments. This study was therefore conducted to detectLeptospiraspp. in rats, soil, and water from urban areas of Sarawak using the polymerase chain reaction (PCR) method. A total of 107 rats, 292 soil samples, and 324 water samples were collected from April 2014 to February 2015. PathogenicLeptospirawas present in 5.6% (6/107) of rats, 11.6% (34/292) of soil samples, and 1.9% (6/324) of water samples. IntermediateLeptospirawas present in 2.7% (8/292) of soil samples and 1.9% (6/324) of water samples. SaprophyticLeptospirawas present in 10.3% (11/107) of rats, 1.4% (4/292) of soil samples, and 0.3% (1/324) of water samples. From this study, 76Leptospiraspp. were isolated. Based on DNA sequencing, the dominantLeptospiraspp. circulating in urban areas of Sarawak are pathogenicLeptospira noguchii, intermediateLeptospira wolffiiserovar Khorat, and saprophyticLeptospira meyeri, respectively. Overall, this study provided important surveillance data on the prevalence ofLeptospiraspp. from rats and the environment, with dominant local serovars in urban areas of Sarawak.

Download Full-text

Synthetic Pyrethroids Pesticide Residues in Soils and Drinking Water Sources from Cocoa Farms in Ghana

Environment and Pollution ◽

10.5539/ep.v5n1p60 ◽

2016 ◽

Vol 5 (1) ◽

pp. 60 ◽

Cited By ~ 5

Author(s):

Benedicta Y. Fosu-Mensah ◽

Elvis D. Okoffo ◽

Michael Mensah

Keyword(s):

Drinking Water ◽

Water Samples ◽

Pesticide Residues ◽

Agricultural Soils ◽

Water Source ◽

Soil Samples ◽

Synthetic Pyrethroids ◽

Lambda Cyhalothrin ◽

Cocoa Farm ◽

Soil And Water

The contamination of pesticides in 32 soils and 64 drinking water samples was investigated from cocoa farms in the Dormaa West District of Ghana to assess pollution status. A total of nine synthetic pyrethroids pesticides were measured with a high resolution Varian CP-3800 Gas Chromatograph equipped with <sup>63</sup>Ni electron capture detector (ECD). Eight synthetic pyrethroid residues namely fenvalerate, deltamethrin, cypermethrin, bifenthrin, permethrin, lambda-cyhalothrin, allethrin and cyfluthrin were detected with lambda-cyhalothrin and allethrin occurring most frequently in soil and water respectively. The concentrations of synthetic pyrethroids residues in the soil samples were in the ranges of; 0.02-0.03 mg/kg for lambda-cyhalothrin, 0.010-0.02 mg/kg for allethrin, 0.010-0.04 mg/kg for cyfluthrin, <0.01-0.04 mg/kg for cypermethrin, 0.02-0.06 mg/kg for deltamethrin, and <0.01-0.03 mg/kg for bifenthrin. Similarly, the synthetic pyrethroids residues in the water samples were in the ranges of; 0.01-0.05 µg/L for allethrin, 0.01-0.04 µg/L for fenvalerate, 0.01-0.04 µg/L for cypermethrin and 0.01-0.05 µg/L for deltamethrin. The concentrations of synthetic pyrethroids pesticide residues recorded in the soil samples analysed were generally below and within their respective US MRLs for agricultural soils, except the mean concentration values recorded for pesticides such as lambda-cyhalothrin at Diabaa (S2) and Krakrom (S3), allethrin at Diabaa (S2) and deltamethrin at Kwakuanya (S4), which were above their respective US MRLs for agricultural soils. The trends of synthetic pyrethroids pesticide residues in the water samples analysed from the various distances to cocoa farms decreased with an increase of water source to cocoa farm (ranking; 0-15m>16-30m>above 30m). All synthetic pyrethroids pesticide residues recorded in the water samples were below and within their respective WHO MRLs for drinking water except for deltamethrin, which exceeded the WHO MRL at Kwakuanya (S4) at distance 0-15m from a cocoa farm. The presence of synthetic pyrethroids residues in the soil and water samples analysed is an indication of the use of the pesticide by cocoa farmers in the study area. The routine monitoring of pesticide residues in the study area is necessary for the control and reduction of environmental pollution.

Download Full-text

Dissipation kinetics of fenamidone, propamocarb and their metabolites in ambient soil and water samples and unknown screening of metabolites

Journal of Environmental Management ◽

10.1016/j.jenvman.2019.109818 ◽

2020 ◽

Vol 254 ◽

pp. 109818 ◽

Cited By ~ 2

Author(s):

Rosalía López-Ruiz ◽

Roberto Romero-González ◽

Antonia Garrido Frenich

Keyword(s):

Water Samples ◽

Dissipation Kinetics ◽

Kinetics Of ◽

Soil And Water

Download Full-text

DETECTION OF ISOPROTHIOLANE IN FOOD, SOIL, AND WATER SAMPLES BY IMMUNOSORBENT ASSAY USING AVIAN ANTIBODIES

Journal of Immunoassay and Immunochemistry ◽

10.1080/15321819.2012.699492 ◽

2013 ◽

Vol 34 (2) ◽

pp. 149-165 ◽

Cited By ~ 6

Author(s):

A. Arul Selvi ◽

H. K. Manonmani

Keyword(s):

Immunosorbent Assay ◽

Water Samples ◽

Soil And Water

Download Full-text

Pesticide residues in vegetable, soil and water samples collected from some districts of Haryana

Agricultural Research Journal ◽

10.5958/2395-146x.2019.00041.3 ◽

2019 ◽

Vol 56 (2) ◽

pp. 261

Author(s):

Sudeep Mishra ◽

M K Singh ◽

M K Saini ◽

Vikash ◽

S Alam ◽

...

Keyword(s):

Water Samples ◽

Pesticide Residues ◽

Vegetable Soil ◽

Soil And Water

Download Full-text

Reservoirs of Listeria Species in Three Environmental Ecosystems

Applied and Environmental Microbiology ◽

10.1128/aem.01018-14 ◽

2014 ◽

Vol 80 (18) ◽

pp. 5583-5592 ◽

Cited By ~ 77

Author(s):

Kristina Linke ◽

Irene Rückerl ◽

Katharina Brugger ◽

Renata Karpiskova ◽

Julia Walland ◽

...

Keyword(s):

Water Samples ◽

Agricultural Land ◽

Content Type ◽

Ecological Sites ◽

Domestic Ruminants ◽

Danube Region ◽

Resistance Rates ◽

Wildlife Reserve ◽

Listeria Seeligeri ◽

Soil And Water

ABSTRACTSoil and water are suggested to represent pivotal niches for the transmission ofListeria monocytogenesto plant material, animals, and the food chain. In the present study, 467 soil and 68 water samples were collected in 12 distinct geological and ecological sites in Austria from 2007 to 2009.Listeriawas present in 30% and 26% of the investigated soil and water samples, respectively. Generally, the most dominant species in soil and water samples wereListeria seeligeri,L. innocua, andL. ivanovii. The human- and animal-pathogenicL. monocytogeneswas isolated exclusively from 6% soil samples in regions A (mountainous region) and B (meadow). Distinct ecological preferences were observed forL. seeligeriandL. ivanovii, which were more often isolated from wildlife reserve region C (Lake Neusiedl) and from sites in proximity to wild and domestic ruminants (region A). The higherL. monocytogenesdetection and antibiotic resistance rates in regions A and B could be explained by the proximity to agricultural land and urban environment.L. monocytogenesmultilocus sequence typing corroborated this evidence since sequence type 37 (ST37), ST91, ST101, and ST517 were repeatedly isolated from regions A and B over several months. A higherL. monocytogenesdetection and strain variability was observed during flooding of the river Schwarza (region A) and Danube (region B) in September 2007, indicating dispersion via watercourses.

Download Full-text