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Method Development of Compound Speci...

Willsie, Adelheid,

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Method Development of Compound Specific Isotope Ratio Measurement of Methylmercury in Sediment by Multicollector - ICP - MS /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Method Development of Compound Specific Isotope Ratio Measurement of Methylmercury in Sediment by Multicollector - ICP - MS // Adelheid Willsie.
作者:	Willsie, Adelheid,
面頁冊數:	1 electronic resource (116 pages)
附註:	Source: Masters Abstracts International, Volume: 86-07.
Contained By:	Masters Abstracts International86-07.
標題:	Environmental science. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31768584
ISBN:	9798302176707

Method Development of Compound Specific Isotope Ratio Measurement of Methylmercury in Sediment by Multicollector - ICP - MS /
Willsie, Adelheid,

Method Development of Compound Specific Isotope Ratio Measurement of Methylmercury in Sediment by Multicollector - ICP - MS /Adelheid Willsie. - 1 electronic resource (116 pages)

Source: Masters Abstracts International, Volume: 86-07.

This work presents a new online method using gas chromatography coupled to the multicollector-inductively coupled plasma-mass spectrometer for methylmercury (MMHg) isotope ratio measurement. An extraction method using distillation was developed that effectively extracted MMHg from up to 5 grams of sediment, imparting no isotope fractionation on MMHg during extraction. Isotope ratios from transient signals were calculated using three different data treatment approaches, facilitated by a data processing application, IsoCor. Peak Area Integration using 80% of the peak gave the most accurate and precise results. Using the proposed methodology, an external precision (2 SD) of ± 0.59‰ for NIST 3177 was measured. This method can be applied to samples with MMHg concentration as low as 0.1 ng/g and was successfully applied to real sediment samples however, additional research to improve the precision of the method is required for the detection of small differences between samples.

English

ISBN: 9798302176707Subjects--Topical Terms:

677245
Environmental science.
Subjects--Index Terms:

Compound specific isotopic ratios

Method Development of Compound Specific Isotope Ratio Measurement of Methylmercury in Sediment by Multicollector - ICP - MS /
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245 1 0 $a Method Development of Compound Specific Isotope Ratio Measurement of Methylmercury in Sediment by Multicollector - ICP - MS / $c Adelheid Willsie.
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300 $a 1 electronic resource (116 pages)
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500 $a Advisors: Hintelmann, Holger Committee members: Canário, João; Dang, Huy.
502 $b M.S. $c Trent University (Canada) $d 2025.
520 $a This work presents a new online method using gas chromatography coupled to the multicollector-inductively coupled plasma-mass spectrometer for methylmercury (MMHg) isotope ratio measurement. An extraction method using distillation was developed that effectively extracted MMHg from up to 5 grams of sediment, imparting no isotope fractionation on MMHg during extraction. Isotope ratios from transient signals were calculated using three different data treatment approaches, facilitated by a data processing application, IsoCor. Peak Area Integration using 80% of the peak gave the most accurate and precise results. Using the proposed methodology, an external precision (2 SD) of ± 0.59‰ for NIST 3177 was measured. This method can be applied to samples with MMHg concentration as low as 0.1 ng/g and was successfully applied to real sediment samples however, additional research to improve the precision of the method is required for the detection of small differences between samples.
546 $a English
590 $a School code: 0513
650 4 $a Environmental science. $3 677245
650 4 $a Analytical chemistry. $3 3168300
653 $a Compound specific isotopic ratios
653 $a Isotope ratio measurement
653 $a Methylmercury
653 $a Gas chromatography
690 $a 0768
690 $a 0486
710 2 $a Trent University (Canada). $b Environmental and Life Sciences. $e degree granting institution. $3 3770473
720 1 $a Hintelmann, Holger $e degree supervisor.
773 0 $t Masters Abstracts International $g 86-07.
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