福建分析测试
福建分析測試
복건분석측시
FUJIAN ANALYSIS & TESTING
2011年
6期
30-32
,共3页
顶空气相色谱法%尿素%甲醇
頂空氣相色譜法%尿素%甲醇
정공기상색보법%뇨소%갑순
Headspace Gas Chromatography%Urea%Methanol
本文采用顶空进样方式,DB-624毛细管柱,FID检测器,测定尿素中甲醇残留量。结果在0.4～200μg/mL质量浓度范围内具有良好的线形关系,相关系数大于0.9999,平均回收率为在92.5%～98.6%之间,变异系数小于2%,检测限为0.2μg/mL。
本文採用頂空進樣方式,DB-624毛細管柱,FID檢測器,測定尿素中甲醇殘留量。結果在0.4～200μg/mL質量濃度範圍內具有良好的線形關繫,相關繫數大于0.9999,平均迴收率為在92.5%～98.6%之間,變異繫數小于2%,檢測限為0.2μg/mL。
본문채용정공진양방식,DB-624모세관주,FID검측기,측정뇨소중갑순잔류량。결과재0.4～200μg/mL질량농도범위내구유량호적선형관계,상관계수대우0.9999,평균회수솔위재92.5%～98.6%지간,변이계수소우2%,검측한위0.2μg/mL。
A method for the determination of trace amounts of methanol in urea by headspace gas chromatography with DB-624 column and FID detector had been developed.A good linearity over the range of 0.4～200 ？g/mL was obtained.The linear correlation coefficient was above 0.9999.The average recoveries varied from 92.5% to 98.6%,with the coefficient of variations lower than 2%,and the detection limit was 0.2 μg/mL.
