| 第 51 卷第 5 期 |  | Vol. 51 No. 5 | | 2021 年 10 月 | Oct 2021 |
|
所屬欄目：分析與測試
氯蟲(chóng)苯甲酰胺原藥中甲磺酸的離子色譜測定 |
| 李楠楠，蔣 鋒，覃柳瓊
（上海曉明檢測技術(shù)服務(wù)有限公司，上海 201612） |
| 摘 要：采用離子色譜法測定了氯蟲(chóng)苯甲酰胺原藥中甲磺酸的質(zhì)量分數。試樣用二氯甲烷溶解，純水萃取，以5 mmol／L氫氧化鉀溶液為淋洗液，選用IonPac AS11-HC陰離子色譜柱和電導檢測器，外標法定量分析。結果顯示，甲磺酸的色譜峰無(wú)其他峰干擾，方法在1.104 7~8.837 4 μg／mL濃度范圍內的標準曲線(xiàn)線(xiàn)性回歸系數為0.999 9，標準偏差為0.001 mg／kg，變異系數為0.82%，平均回收率為100.5%，定量限為0.005%。該方法可準確快速測定氯蟲(chóng)苯甲酰胺中的甲磺酸質(zhì)量分數。 |
| 關(guān)鍵詞：甲磺酸；氯蟲(chóng)苯甲酰胺原藥；離子色譜；外標法 |
| 中圖分類(lèi)號：O657.7 文獻標識碼：A 文章編號：1009-9212（2021）05-0102-03 |
|
| Determination of Methanesulfonic Acid in Technical Chlorantraniliprole by Ion Chromatography |
| LI Nan-nan, JIANG Feng, QIN Liu-qiong
(GreenTech Laboratory Co.,Ltd., Shanghai 201612, China) |
| Abstract：A method fordetermining methanesulfonic acid in chlorantraniliprole TC by IC was established. In a typical process, sample was dissolved in dichloromethane and followed by extraction using water. The analysis was conducted under conditions including 5 mmol/L potassium hydroxide solution as eluent, IonPac AS11-HC column and electrical conductivity detector. Results indicated that the linear correlation coefficient is 0.999 9 in a range from 1.104 7 μg/mL to 8.837 4 μg/mL; the SD is 0.001 mg/kg, RSD was 0.82%; average recovery was 100.5% and LOQ was 0.005%. This method is suitable for the analysis of methanesulfonic acid content in chlorantraniliprole. |
| Key words：methanesulfonic acid; chlorantraniliprole techanical; external standard method |
|
作者簡(jiǎn)介：李楠楠（1990—），女，安徽淮南人，碩士研究生，研究方向：農藥原藥及制劑的研發(fā)與質(zhì)檢（E-mail：nannan_li@greentechlab.cn）。
|
收稿日期：2021-08-03
|
|