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zb6824785: ½ð±Ò+20, ·­ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, Many thanks! 2014-02-28 12:20:11
3 Standard addition method

To each of each of three 25ml headspace vials, add 5.0ml of city tap water respectively, then

add 1.0¦Ìl, 2.0¦Ìl and 3.0¦Ìl of bromodichloromethane sample at the concentrations of

77.72¦Ìg/ml and dibromochloromethane sample at the concentrations of

98.24¦Ìg/ml separately, cap plugs immediately, mix well manually, allow to stand at a

constant temperature of 15¡æ for 5min, inject 100¦Ìl of headspace gas with a vapor-

tight syringe, record the chromatograms.
2Â¥2014-02-28 10:38:41
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