鉬酸銨分光光度法測定水質(zhì)中總磷時砷的干擾消除研究_圖文

1、 第1 期 龔艷， 等: 鉬酸銨分光光度法測定水質(zhì)中總磷時砷的干擾消除研究 41 Study on Cancellation of Arsenic Interference in Determination of Total Phosphorus in Water by Ammonium Molybdate Spectrophotometry GONG Yan1 ，WEN Sheng2 ，LI Shu qian1 ，HU Ding jin1 ，LIU Jian tong3 ， AO Hong yi3 ，F(xiàn)AN Ming yong1 ( 1 Institute of Agricultural Q

2、uality Standards and Testing Technology， Hubei Academy of Agriculture Sciences，Wuhan 430064 ，China; 2 Hubei Provincial Centre for Disease Control and Prevention，Wuhan 430079 ， China; 3 Institute of Hydrobiology，Chinese Academy of Sciences，Wuhan 430072 ，China Abstract : The single affecting factor me

3、thod is combined with the orthogonal test to study the interference of arsenic speciation and the main interference factor，and to determine the optimal amount of sodium thiosulfate and the best developing time in the ammonium molybdate spectrophotometric detection of total phosphorus in water Result

4、s showed that the interference effects of arsenic species are: arsenate arsenite dimethylarsinic When the arsenic concentration is lower than 2 0 mg / L，the developing time is the main influence factor When the arsenic concentration was in the range of 0 1 5 0 mg / L，the optimal amount of sodium thi

5、osulfate ( 40 mg / mL was 0 5 mL and the best developing time was 15 min with the consideration of the practical operation and real sample Key words: ammonium molybdate spectrophotometry; water quality; total phosphorus determination; arsenic interference cancellation Classifying number: O657 32 櫅櫅櫅

6、櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅 請速 訂 閱 2011 年分析測試 技術 與儀器 如果您想 了解當代分析測試領域的新進展與新動向 交流分析測試研究的新理論與新成果 開發(fā)分析測試研究工作的新技術與新方法 擴展分析測試儀器的新用途與新功能 研制分析測試的新儀器與新組件 ISSN 1006 3757 ， 郵 發(fā) 代 號: 54 90 ， CN 62 1123 / O6 分析測試技術與儀器 請您訂閱向國內(nèi)外公開發(fā)行的 雜 志， 刊號 分析測試技術與儀器 E定價: 8 元 / 冊， 全年定價 32 元 投稿請與 編 輯 部 聯(lián) 系， 聯(lián) 系電 話: 0931 4968280 ， mail: fxcs licp cas c