化学分析计量
化學分析計量
화학분석계량
CHEMICAL ANALYSIS AND METERAGE
2013年
6期
62-65
,共4页
张晓艳%王庆%刘卫杰%李娟%赵焕珍
張曉豔%王慶%劉衛傑%李娟%趙煥珍
장효염%왕경%류위걸%리연%조환진
顶空-气相色谱%卷烟包装材料%胶粘剂%标准加入法
頂空-氣相色譜%捲煙包裝材料%膠粘劑%標準加入法
정공-기상색보%권연포장재료%효점제%표준가입법
headspace gas chromatography%cigarette packaging%adhesive%standard addition method
采用顶空-气相色谱法测定卷烟包装材料用胶粘剂中挥发性有机化合物的含量,以含有30%(体积分数)水的1,3-二甲基-2-咪唑烷酮(DMI)溶液为溶剂,将样品适当稀释后取样,采用标准加入法定量。保持校准曲线试液基质同样品试液基质一致,消除顶空条件下基质对待测化合物气-液两相分配比的影响。各化合物检出限为6~40 mg/kg,测定结果的相对标准偏差为0.38%~2.88%(n=5),回收率为94.2%~103.6%。该法适用于各种水基型胶粘剂的检测。
採用頂空-氣相色譜法測定捲煙包裝材料用膠粘劑中揮髮性有機化閤物的含量,以含有30%(體積分數)水的1,3-二甲基-2-咪唑烷酮(DMI)溶液為溶劑,將樣品適噹稀釋後取樣,採用標準加入法定量。保持校準麯線試液基質同樣品試液基質一緻,消除頂空條件下基質對待測化閤物氣-液兩相分配比的影響。各化閤物檢齣限為6~40 mg/kg,測定結果的相對標準偏差為0.38%~2.88%(n=5),迴收率為94.2%~103.6%。該法適用于各種水基型膠粘劑的檢測。
채용정공-기상색보법측정권연포장재료용효점제중휘발성유궤화합물적함량,이함유30%(체적분수)수적1,3-이갑기-2-미서완동(DMI)용액위용제,장양품괄당희석후취양,채용표준가입법정량。보지교준곡선시액기질동양품시액기질일치,소제정공조건하기질대대측화합물기-액량상분배비적영향。각화합물검출한위6~40 mg/kg,측정결과적상대표준편차위0.38%~2.88%(n=5),회수솔위94.2%~103.6%。해법괄용우각충수기형효점제적검측。
The adhesives was dissolved by DMI with 30%(volume fraction) water, then the content of volatile organic compounds in adhesives for cigarette packaging was determined by headspace-GC,and quantified with the method of standard addition. The influence of distribution ratio for the content of volatile organic compounds in the two phase of gas and liquid under headspace condition was eliminated by keeping consistent of matrix of standard curve and the sample. The detection limits were 6-40 mg/kg. The relative standard deviation of determination results was 0.38%-2.88%(n=5). The recovery rate was from 94.2%to 103.6%. The method is suitable for the detection of various kinds of water-based adhesives.