酿酒科技
釀酒科技
양주과기
Liquor-Making Science & Technology
2015年
11期
121-123,126
,共4页
孙蕾%丁春瑞%李静%劳斐
孫蕾%丁春瑞%李靜%勞斐
손뢰%정춘서%리정%로비
气相色谱质谱法%白酒%不确定度%邻苯二甲酸二丁酯
氣相色譜質譜法%白酒%不確定度%鄰苯二甲痠二丁酯
기상색보질보법%백주%불학정도%린분이갑산이정지
GC-MS%Baijiu(liquor)%uncertainty%dibutyl phthalate
参照国家标准GB/T 21911—2008,采用气相色谱质谱法测定白酒中邻苯二甲酸二丁酯含量.通过对测定过程中的不确定度来源进行分析,建立了其测量结果不确定度的数学模型,评定出各不确定度分量,最后计算出合成标准不确定度和扩展不确定度.结果表明,校准曲线拟合产生的不确定度在不确定度合成中贡献最大,在对白酒中邻苯二甲酸二丁酯进行测定时,应对标准曲线的拟合过程加强控制,确保结果的准确性.
參照國傢標準GB/T 21911—2008,採用氣相色譜質譜法測定白酒中鄰苯二甲痠二丁酯含量.通過對測定過程中的不確定度來源進行分析,建立瞭其測量結果不確定度的數學模型,評定齣各不確定度分量,最後計算齣閤成標準不確定度和擴展不確定度.結果錶明,校準麯線擬閤產生的不確定度在不確定度閤成中貢獻最大,在對白酒中鄰苯二甲痠二丁酯進行測定時,應對標準麯線的擬閤過程加彊控製,確保結果的準確性.
삼조국가표준GB/T 21911—2008,채용기상색보질보법측정백주중린분이갑산이정지함량.통과대측정과정중적불학정도래원진행분석,건립료기측량결과불학정도적수학모형,평정출각불학정도분량,최후계산출합성표준불학정도화확전불학정도.결과표명,교준곡선의합산생적불학정도재불학정도합성중공헌최대,재대백주중린분이갑산이정지진행측정시,응대표준곡선적의합과정가강공제,학보결과적준학성.
Based on GB/T 21911-2008, the content of dibutyl phthalate in Baijiu(liquor) was determined by GC-MS. Through the analysis of the source of the uncertainties in the determination process, the mathematical model of the uncertainties of the determination results had been set up, each individual uncertainty was evaluated, and the synthetic standard uncertainty and expanded uncertainty were calculated eventually. The results suggested that the standard curve fitting made the greatest contributions to the combined standard uncertainty. Accordingly, strength-ening the control of the fitting process of standard curve in the determination could ensure the accuracy of the determination results.
