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Study of vortex-assisted MSPD and LC-MS/MS using alternative solid supports for pharmaceutical extraction from marketed fish

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      A review of chitin and chitosan applications

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        Diclofenac residues as the cause of vulture population decline in Pakistan.

        The Oriental white-backed vulture (OWBV; Gyps bengalensis) was once one of the most common raptors in the Indian subcontinent. A population decline of >95%, starting in the 1990s, was first noted at Keoladeo National Park, India. Since then, catastrophic declines, also involving Gyps indicus and Gyps tenuirostris, have continued to be reported across the subcontinent. Consequently these vultures are now listed as critically endangered by BirdLife International. In 2000, the Peregrine Fund initiated its Asian Vulture Crisis Project with the Ornithological Society of Pakistan, establishing study sites at 16 OWBV colonies in the Kasur, Khanewal and Muzaffargarh-Layyah Districts of Pakistan to measure mortality at over 2,400 active nest sites. Between 2000 and 2003, high annual adult and subadult mortality (5-86%) and resulting population declines (34-95%) (ref. 5 and M.G., manuscript in preparation) were associated with renal failure and visceral gout. Here, we provide results that directly correlate residues of the anti-inflammatory drug diclofenac with renal failure. Diclofenac residues and renal disease were reproduced experimentally in OWBVs by direct oral exposure and through feeding vultures diclofenac-treated livestock. We propose that residues of veterinary diclofenac are responsible for the OWBV decline.
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          Pharmaceutical and personal care products (PPCPs) in urban receiving waters.

           Richard Ellis (2006)
          The transport pathways of pharmaceutical and personal care products (PPCP) discharges within the urban water cycle include both combined and separate sewer systems with only the former receiving treatment. The dry-weather flow dilution patterns for selected PPCPs following discharge from a sewage treatment works (STW) to a North London stream indicate a persistent downstream increase in concentration. The dilution ratio analysis also indicates that the STW's final effluent only contributes a dilution of the endogenous concentrations already present in the river flow which reflects a progressive PPCP load with increasing urbanization; "worst-case" scenarios being probably related to wet-weather conditions. Maximum PPCP concentrations fall above the reported PEC levels and the analysis highlights the deficiencies of conventional acute toxicity for the evaluation of long-term effects of episodic urban discharges. Groundwater analysis points to sewer exfiltration which is limited in terms of PPCP impact to 25-50 cm depths.
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            Author and article information

            Journal
            Analytical and Bioanalytical Chemistry
            Anal Bioanal Chem
            Springer Nature
            1618-2642
            1618-2650
            June 2015
            April 25 2015
            June 2015
            : 407
            : 16
            : 4793-4803
            10.1007/s00216-015-8685-3
            © 2015
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