CAJ | 학술논문

水中阴离子最常用的分析方法是离子色谱法。对离子色谱法测定水中硫酸根离子的不确定度进行了评定。分析了峰面积（y）、斜率（b）和截距（a）等主要影响因素带来的不确定度。计算了不确定度分量及合成不确定度，扩展不确定度为0．28 mg· L-1．
수중음리자최상용적분석방법시리자색보법。대리자색보법측정수중류산근리자적불학정도진행료평정。분석료봉면적（y）、사솔（b）화절거（a）등주요영향인소대래적불학정도。계산료불학정도분량급합성불학정도，확전불학정도위0．28 mg· L-1．
The most common method of determination anions in water is ion chromatography .In this paper , the determination uncertainty of sulfate ion in water by ion chromatography was investigated .The main factors affecting the determination uncer-tainty of sulfate ion was from the peak area -y, slope-b and intercept-a, which were assessed.The uncertainty components were calculated and combined , and the expanded uncertainty was 0.28 mg· L-1 .