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231223s2008 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2008.644
|2 doi
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|a pubmed25n0604.xml
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|a (NLM)18653948
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|a DE-627
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|e rakwb
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|a eng
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1 |
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|a Hu, Ruikang
|e verfasserin
|4 aut
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|a Picogram determination of N-nitrosodimethylamine in water
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|c 2008
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 31.12.2008
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a (c) IWA Publishing 2008.
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|a N-nitrosodimethylamine (NDMA) persistence within surface waters is a major concern for downstream communities exploiting these waters as drinking water supplies. The objective of this study is to develop a novel and efficient analytical method for NDMA via different technologies: pulsed splitless gas chromatography-nitrogen phosphorus detector (GC-NPD), large volume injection (LVI) gas chromatography-mass spectrometry (GC/MS) via programmable temperature vaporizer (PTV) inlet or PTV-gas chromatography-triple quadruple mass spectrometry (GC-MS/MS) and continuous liquid-liquid extraction. It was found that the sensitivity required for NDMA analysis by GC-NPD can only be achieved when the NPD bead is extremely clean. LVI via PTV can greatly improve GC-MS system sensitivity for analyzing NDMA. With the help of DB-624 (25 m x 200 microm x 1.12 microm) connected with DB-5MS (30 m x 250 microm x 0.25 microm) in series, PTV-GC/MS could overcome the matrix interference for the trace analysis of NDMA. Variable instrument conditions were studied in detail, with the optimized process being validated via precision and accuracy studies. PTV- triple quadruple GC-MS/MS system could efficiently remove the interference on a single DB-5MS (30 m x 250 microm x 0.25 microm) column with good sensitivity and selectivity. The developed methods have been successfully applied to test NDMA in different types of water samples with satisfactory results
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|a Journal Article
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|a Water
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|a 059QF0KO0R
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|a Dimethylnitrosamine
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|a M43H21IO8R
|2 NLM
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|a Zhang, Lifeng
|e verfasserin
|4 aut
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|a Yang, Zhaoguang
|e verfasserin
|4 aut
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 58(2008), 1 vom: 21., Seite 143-51
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnas
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| 773 |
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|g volume:58
|g year:2008
|g number:1
|g day:21
|g pages:143-51
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|u http://dx.doi.org/10.2166/wst.2008.644
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