المؤلفون: Brahman, Kapil Dev, Kazi, Tasneem Gul, Afridi, Hassan Imran, Naseem, Shahid, Arain, Sadia Sadaf, Wadhwa, Sham Kumar, Shah, Faheem

المصدر: Ecotoxicology & Environmental Safety; Mar2013, Vol. 89, p95-107, 13p

مصطلحات موضوعية: GROUNDWATER, GROUNDWATER pollution, ARSENIC & the environment, ARSENIC poisoning, FLUORIDES -- Environmental aspects, TITANIUM dioxide -- Environmental aspects, CALCITE

مصطلحات جغرافية: PAKISTAN

مستخلص: The present study investigated total arsenic (tAs), inorganic arsenic (iAs) species and fluoride ion (F⁻) contamination in underground water of Mithi and Nangarparkar subdistricts of Tharparkar, Pakistan. Statistical parameters, principal component analysis, cluster analysis, sodium absorption ratio and saturation indices (SI) were used to detect interrelation and sources of concentration of tAs, iAs species (As³⁺ and As⁵⁺), F⁻ and others physicochemical parameters. The concentration of As³⁺ was measured by cloud point extraction using ammonium pyrrolidinedithiocarbamate (APDC) as complexing reagent, while inorganic arsenic (iAs) was determined by solid phase extraction, using titanium dioxide. The positive correlation was observed between F⁻ contents with As species and other major ions, found in the underground water of the study area. The resulted data indicated that underground water samples of two areas of Tharparkar were severely contaminated with arsenic (0.100–3.83mg/L) and fluoride ion (13.8–49.3mg/L), which were exceeded the World Health Organization provisional guideline values, 0.01mg/L and 1.5mg/L, respectively. The SI of fluorite and calcite in the underground water samples showed that most of the samples were oversaturated with respect to calcite and fluorite. [Copyright &y& Elsevier]

: Copyright of Ecotoxicology & Environmental Safety is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Gul Kazi, Tasneem, Qadir Shah, Abdul, Imran Afridi, Hassan, Ali Shah, Nadir, Balal Arain, Mohammad

المصدر: Ecotoxicology & Environmental Safety; Jan2013, Vol. 87, p120-123, 4p

مصطلحات موضوعية: ARSENIC compounds & the environment, POULTRY feeding, FEED contamination, ARSENIC in the body, BROILER chickens, POULTRY manure, EXCRETION, FARMS & the environment, POULTRY farms, ORGANIC compounds, ATOMIC absorption spectroscopy, PHYSIOLOGY

مستخلص: Abstract: The purpose of this study was to evaluate the translocation of arsenic (As) from feed to different tissues of broiler chicken (leg, breast, liver and heart) and excretory product (manure). The feed, broiler chicken and manure samples were collected from five selected poultry farms. The As concentrations in all samples were determined by electrothermal atomic absorption spectrometry, after microwave assisted acid digestion in closed vessels. The concentrations of As in different chicken feeds were found in the range of 21.3–43.7μgg⁻¹. The contents of As in different tissues of broiler chicken, liver, muscles and heart were found in the range of 3.07–7.17, 2.15–5.28 and 2.11–6.36μgg⁻¹, respectively, while manure samples contains 22.8–50.3μgg⁻¹. The obtained data shows the high correlation coefficient between As contents in feed, excretory product or manure and tissues of broiler chicken in the range of r=0.41–0.83. The high level of As in excretory product may add toxicant to environment, on their disposal. [Copyright &y& Elsevier]

: Copyright of Ecotoxicology & Environmental Safety is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)