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1. Occurrence of phthalate esters in surface water and sediments from the Pearl River Delta, Southern China | |||
LI Ting,YIN Pinghe,ZHAO Ling | |||
Environmental Science and Techology 26 May 2014 | |||
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Abstract:Rapid developments of the Pearl River Delta (PRD) region in recent decades have resulted in the increasingly serious environmental pollution in and around the region. The 6 priority phthalate esters (PAEs) were investigated in surface water and sediment from seven estuaries within the PRD for assessing the ecological risk to the aquatic environment. The concentration of Σ6PAEs in surface water ranged from 1.26 to 28.1 μg L-1, with a mean concentration of 16.5 μg L-1. It was from 1.56 to 31.2 μg g-1 dw in sediment, with a mean concentration of 9.72 μg g-1 dw. DMP, DBP and DEHP were found in all samples, and they were the predominant PAEs in the region. The distribution of PAEs showed that more serious pollution was found in Humen and the consumption of PAEs was increased in the most recent years in the PRD region. Risk quotient of detected PAEs to the relevant aquatic organisms of fish, daphnids and algae indicated the possible threat for the aquatic environment due to the presence of DBP and DEHP. | |||
TO cite this article:LI Ting,YIN Pinghe,ZHAO Ling. Occurrence of phthalate esters in surface water and sediments from the Pearl River Delta, Southern China[OL].[26 May 2014] http://en.paper.edu.cn/en_releasepaper/content/4598552 |
2. A molecularly imprinted polymer for determining tributyltinchloride by LC-MS/MS | |||
ZHU Shanshan ,Futao HU,Ting YANG,Ning GAN | |||
Environmental Science and Techology 28 March 2012 | |||
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Abstract:There is a high interest in speciation of tributyltinchloride(TBT) in environment samples, such as seawater, due to the influence in the transmission of the contamination in the trophic chain. The environmental impact of organotin compounds has given particulate importance to analytical studies. This paper reports that applying a molecular imprinting technolgy with liquid chromatography-tandem mass spectrometry (LC-MS/MS) to this field. The imprinted polymer has been synthesised by the non-covalent free redical approach using acrylamide(AM) as monomer in the presence of TBT as template molecule in acetonitrile solvent. The ability of the polymer synthesised to retain and distinguish TBT has been evaluated and optimized. The analytical characteristics included linearity(10-100000μgL-1), a pre-concentration factor of 100, and detection limit of 0.01 μgl-1. | |||
TO cite this article:ZHU Shanshan ,Futao HU,Ting YANG, et al. A molecularly imprinted polymer for determining tributyltinchloride by LC-MS/MS[OL].[28 March 2012] http://en.paper.edu.cn/en_releasepaper/content/4472600 |
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