河口沉积物中汞和甲基汞Estuarinesediment-Mercuryandmethylmercury-分析测试百科网

河口沉积物中汞和甲基汞Estuarinesediment-Mercuryandmethylmercury

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品牌：北京恒元启天化工技术研究院
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Certified values1 uncertainty2Total Hg .................................................. 132 mg/kg ....................

北京世纪奥科生物技术有限公司

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Certified values1 uncertainty2

Total Hg .................................................. 132 mg/kg ..................... 3 mg/kg

CH3Hg+ ................................................... 0.0755 mg/kg ................. 4 µg/kg

1) Unweighted mean value of the means of 11 to 13 accepted sets of data, each set being obtained in a different laboratory and / or with a different method of determination. Certified value is based on dry mass. The certified values are traceable to SI.

2) The certified uncertainty is the half-width of the 95 % confidence interval of the mean defined in 1). k-factors were chosen according to the t-distribution depending of the number of accepted sets of results and were 2.179 for total Hg and 2.228 for MeHg.

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河口沉积物中汞和甲基汞Estuarinesediment-Mercuryandmethylmercury