广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2014年
15期
151-154,166
,共5页
硅%磷%砷钼蓝比色法%定量测定
硅%燐%砷鉬藍比色法%定量測定
규%린%신목람비색법%정량측정
silicon%phosphorus%arsenic molybdenum blue colorimetric method%quantitative determination
砷是钢铁成分中的有害元素,当砷含量较高时,会使钢的脆性增加,延伸率,断面收缩率及冲击韧性降低。测定钢铁中砷的含量对炼钢十分重要,为实现砷的快速测定,本文深入探讨分离硅、磷,用砷钼蓝比色法,实现砷定量的快速测定。提出用高氯酸冒烟分离钢铁样品中的硅,用硝酸溶解残留物,在酸性介质中,加入钼酸铵溶液和乙酸丁酯萃取生成磷钼酸,砷与钼酸铵生成砷钼黄,再加入酒石酸钾纳掩蔽磷,加入抗败血酸和氯化亚锡混合液还原,使砷钼黄还原为砷钼蓝,然后用此砷钼蓝比色法快速定量测定砷。此方法的加标准回收率94.74%~108.0%.检出限为0.005%。
砷是鋼鐵成分中的有害元素,噹砷含量較高時,會使鋼的脆性增加,延伸率,斷麵收縮率及遲擊韌性降低。測定鋼鐵中砷的含量對煉鋼十分重要,為實現砷的快速測定,本文深入探討分離硅、燐,用砷鉬藍比色法,實現砷定量的快速測定。提齣用高氯痠冒煙分離鋼鐵樣品中的硅,用硝痠溶解殘留物,在痠性介質中,加入鉬痠銨溶液和乙痠丁酯萃取生成燐鉬痠,砷與鉬痠銨生成砷鉬黃,再加入酒石痠鉀納掩蔽燐,加入抗敗血痠和氯化亞錫混閤液還原,使砷鉬黃還原為砷鉬藍,然後用此砷鉬藍比色法快速定量測定砷。此方法的加標準迴收率94.74%~108.0%.檢齣限為0.005%。
신시강철성분중적유해원소,당신함량교고시,회사강적취성증가,연신솔,단면수축솔급충격인성강저。측정강철중신적함량대련강십분중요,위실현신적쾌속측정,본문심입탐토분리규、린,용신목람비색법,실현신정량적쾌속측정。제출용고록산모연분리강철양품중적규,용초산용해잔류물,재산성개질중,가입목산안용액화을산정지췌취생성린목산,신여목산안생성신목황,재가입주석산갑납엄폐린,가입항패혈산화록화아석혼합액환원,사신목황환원위신목람,연후용차신목람비색법쾌속정량측정신。차방법적가표준회수솔94.74%~108.0%.검출한위0.005%。
Arsenic was a harmful ingredient in steel.The high degree of arsenic content increased the brittleness of steel, and decreased the elongation , section shrinkage rate and impact toughness.For the rapid determination of arsenic , the separation of silicon in steel samples with perchloric acid smoking , dissolved in nitric acid residued in acidic medium , adding ammonium molybdate solution and butyl acetate extraction form phosphomolybdic acid , arsenic and ammonium molybdate formed molybdenum yellow arsenic , adding tartaric acid potassium sodium masking P , anti septic acid and stannous chloride mixture reduction , the reduction of arsenic molybdenum yellow arsenic molybdenum blue , and then used the arsenic molybdenum blue colorimetric method for rapid quantitative determination of arsenic.