浙江化工
浙江化工
절강화공
ZHEJIANG CHEMICAL INDUSTRY
2014年
5期
42-44
,共3页
丙烯酸及酯%MEHQ%不确定度
丙烯痠及酯%MEHQ%不確定度
병희산급지%MEHQ%불학정도
acrylic acid and esters%MLEHQ%uncertainty
对GB/T 17530.5-1998测定工业丙烯酸及酯中阻聚剂含量的测量不确定度进行评定。分析了标准物质、分析操作、曲线回归、重复性测定等方面对不确定度的影响。结果表明，曲线回归及重复性测定对不确定度影响最大。当样品中MEHQ含量为190.78 mg/kg时， MEHQ含量的扩展不确定度为4.2 mg/kg（k=2）。
對GB/T 17530.5-1998測定工業丙烯痠及酯中阻聚劑含量的測量不確定度進行評定。分析瞭標準物質、分析操作、麯線迴歸、重複性測定等方麵對不確定度的影響。結果錶明，麯線迴歸及重複性測定對不確定度影響最大。噹樣品中MEHQ含量為190.78 mg/kg時， MEHQ含量的擴展不確定度為4.2 mg/kg（k=2）。
대GB/T 17530.5-1998측정공업병희산급지중조취제함량적측량불학정도진행평정。분석료표준물질、분석조작、곡선회귀、중복성측정등방면대불학정도적영향。결과표명，곡선회귀급중복성측정대불학정도영향최대。당양품중MEHQ함량위190.78 mg/kg시， MEHQ함량적확전불학정도위4.2 mg/kg（k=2）。
The uncertainty of determination of MEHQ in acrylic acid and esters was evaluated dccording to the method of the GB/T 17530.5-1998. The influencing factors the uncertainty were analyzed from the standard material, operation,curvilinear regression and measurement repeatability etc. The results showed that the effects of curvilinear regression and measurement repeatability were most significant factors. As the con-tent of MEHQ in the sample was 190.78mg/L ,its expanded uncertainty was 4.2 mg/kg(k=2).
