广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2015年
15期
152-154
,共3页
强阴离子固相萃取柱%高效液相色谱%丙酸钙(钠)%蛋糕
彊陰離子固相萃取柱%高效液相色譜%丙痠鈣(鈉)%蛋糕
강음리자고상췌취주%고효액상색보%병산개(납)%단고
SPE by SAX%HPLC%calcium ( sodium) propionate%cake
探讨了利用高效液相色谱法进行蛋糕中丙酸钙(钠)测定的前处理方法,可以降低样品本底背景,避免假阳性的出现,提高定量准确性;强阴离子交换固相萃取柱净化效果最佳,1 mL 超纯水淋洗,2 mL 0.5%盐酸溶液洗脱;方法检出限为0.025 g/kg,回收率为96.0%~107.6%,测定结果的相对标准偏差为1.4%~11.1%;结果表明,利用强阴离子交换柱的固相萃取法可以作为蛋糕中丙酸钙(钠)检测的有效方法。
探討瞭利用高效液相色譜法進行蛋糕中丙痠鈣(鈉)測定的前處理方法,可以降低樣品本底揹景,避免假暘性的齣現,提高定量準確性;彊陰離子交換固相萃取柱淨化效果最佳,1 mL 超純水淋洗,2 mL 0.5%鹽痠溶液洗脫;方法檢齣限為0.025 g/kg,迴收率為96.0%~107.6%,測定結果的相對標準偏差為1.4%~11.1%;結果錶明,利用彊陰離子交換柱的固相萃取法可以作為蛋糕中丙痠鈣(鈉)檢測的有效方法。
탐토료이용고효액상색보법진행단고중병산개(납)측정적전처리방법,가이강저양품본저배경,피면가양성적출현,제고정량준학성;강음리자교환고상췌취주정화효과최가,1 mL 초순수림세,2 mL 0.5%염산용액세탈;방법검출한위0.025 g/kg,회수솔위96.0%~107.6%,측정결과적상대표준편차위1.4%~11.1%;결과표명,이용강음리자교환주적고상췌취법가이작위단고중병산개(납)검측적유효방법。
The pretreatment method on measuring calcium ( sodium) propionate in cakes by liquid chromatography ( LC) was discussed which reduced sample-to-background, avoids false positive reactivity, and increased the quantitative accuracy.The solid phase extraction ( SPE) by strong anion-exchange ( SAX) can achieve the best purification effect by washing with 1 mL ultrapure water and eluting with 2 mL 0.5% hydrochloric acid.The method detection limit was 0.025 g/kg, the recovery rate was 96.0%~107.6% with the relative standard deviations ( RSD) of 1.4%~11.1%. The results showed that the SPE by SAX can be served as an effective approach to measure calcium ( sodium) propionate in cakes.