化学分析计量
化學分析計量
화학분석계량
CHEMICAL ANALYSIS AND METERAGE
2014年
6期
62-64
,共3页
吴升德%胡天良%殷杰%卞永东
吳升德%鬍天良%慇傑%卞永東
오승덕%호천량%은걸%변영동
丁酮%吡虫啉%顶空毛细管气相色谱
丁酮%吡蟲啉%頂空毛細管氣相色譜
정동%필충람%정공모세관기상색보
butanone%imidacloprid%headspace capillary gas chromatography
采用顶空毛细管气相色谱法测定吡虫啉中的丁酮残留量。样品经二氯甲烷溶解,用 HP–5毛细管色谱柱分离,氢火焰离子化检测器检测,顶空平衡温度为70℃,平衡时间为10 min,以外标法计算含量。丁酮的质量浓度在2.0~510.0μg/mL 范围内线性关系良好,相关系数 r=0.9997,方法的检出限为0.5μg/mL,样品3个水平的加标回收率为99.4%~102.1%,测定结果的相对标准偏差小于3.0%(n=5)。该方法简便快速,准确可靠,可用于吡虫啉产品的质量控制。
採用頂空毛細管氣相色譜法測定吡蟲啉中的丁酮殘留量。樣品經二氯甲烷溶解,用 HP–5毛細管色譜柱分離,氫火燄離子化檢測器檢測,頂空平衡溫度為70℃,平衡時間為10 min,以外標法計算含量。丁酮的質量濃度在2.0~510.0μg/mL 範圍內線性關繫良好,相關繫數 r=0.9997,方法的檢齣限為0.5μg/mL,樣品3箇水平的加標迴收率為99.4%~102.1%,測定結果的相對標準偏差小于3.0%(n=5)。該方法簡便快速,準確可靠,可用于吡蟲啉產品的質量控製。
채용정공모세관기상색보법측정필충람중적정동잔류량。양품경이록갑완용해,용 HP–5모세관색보주분리,경화염리자화검측기검측,정공평형온도위70℃,평형시간위10 min,이외표법계산함량。정동적질량농도재2.0~510.0μg/mL 범위내선성관계량호,상관계수 r=0.9997,방법적검출한위0.5μg/mL,양품3개수평적가표회수솔위99.4%~102.1%,측정결과적상대표준편차소우3.0%(n=5)。해방법간편쾌속,준학가고,가용우필충람산품적질량공제。
A method was established for the determination of butanone in imidacloprid by headspace capillary gas chromatography. A HP–5 capillary column was used with FID detector at injection temperature of 70℃ and equilibrium time of 10 min. The sample was dissolved by dichloromethane and its butanone concentration was calculated by external standard method. Butanone showed good linearity within 2.0–510.0 μg/mL with the correlation coefficient of 0.999 7. The detection limit was 0.5 μg/mL. The recoveries for butanone were 99.4%–102.1%,and the relative standard deviation was less than 3.0%. The method is simple,rapid,accurate and reliable,and it is applicable for product quality control.