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zb6824785

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È¡3¸ö25ml¶¥¿ÕÆ¿·Ö±ð¼Ó 1.0¡¢2.0 ºÍ5.0mlº¬±½Å¨¶ÈΪ0.357mg/LµÄºÏ³ÉË®Ñù,
ÔÚ23¡æ¾²ÖÃ60min,ÓÃÆøÃÜÐÍ×¢ÉäÆ÷È¡300¦Ìl¶¥¿ÕÆøÌå½øÑù, ¼Ç¼ɫÆ×·åÃæ»ý¡£Áí
È¡1.0¦ÌlŨ¶ÈΪ357mg/L ±½/¼×´¼±ê×¼ÑùÆ·¼Óµ½º¬ÓÐ0.20ml Ë®µÄ25ml ¶¥¿ÕÆ¿ÄÚ,
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jiangguofeng

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zb6824785: ½ð±Ò+20, ·­ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, Thank you very very much! 2014-02-28 12:24:21
2 Various gas-liquid phase ratio method

To each of three 25ml headspace vials, add respectively 1.0ml, 2.0 and 5.0ml of synthetical water sample

containing 0.357mg/L benzene, allow to stand at 23¡æ for 60min, inject 300¦Ìl of

headspace gas with a vapor-tight syringe,  record the chromatograms. Add 1.0¦Ìl of

357mg/L benzene/methanol sample to a 25ml headspace vial containing 0.20ml of

water, cap plug immediately, allow to stand at 23¡æ for 60min, inject 300¦Ìl of the gas, record the chromatograms.
2Â¥2014-02-28 10:39:59
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