广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2012年
6期
101-102,168
,共3页
邻二氮菲%分光光度法%铁%发样
鄰二氮菲%分光光度法%鐵%髮樣
린이담비%분광광도법%철%발양
1%10-phenanthroline monohydrate%spectrophotometry%iron%hair samples
建立了以邻二氮菲测定人发样中的微量铁的分光光度法。研究表明,在pH=2~9的溶液中,铁(Ⅲ)可用盐酸羟胺还原至铁(Ⅱ),生成的铁(Ⅱ)可与邻二氮菲生成稳定的橘红色络合物,其最大吸收波长为506 nm,铁浓度在0.31~16.00 mg/L范围内与溶液吸光度呈良好线性关系,线性回归方程为A=0.20192ρ-0.01164(mg/L),相关系数r=0.9999,检出限为0.157 mg/L,相对标准偏差(RSD)为0.58%,表观摩尔吸收系数ε=3.59×104L.(mol-1cm-1)。
建立瞭以鄰二氮菲測定人髮樣中的微量鐵的分光光度法。研究錶明,在pH=2~9的溶液中,鐵(Ⅲ)可用鹽痠羥胺還原至鐵(Ⅱ),生成的鐵(Ⅱ)可與鄰二氮菲生成穩定的橘紅色絡閤物,其最大吸收波長為506 nm,鐵濃度在0.31~16.00 mg/L範圍內與溶液吸光度呈良好線性關繫,線性迴歸方程為A=0.20192ρ-0.01164(mg/L),相關繫數r=0.9999,檢齣限為0.157 mg/L,相對標準偏差(RSD)為0.58%,錶觀摩爾吸收繫數ε=3.59×104L.(mol-1cm-1)。
건립료이린이담비측정인발양중적미량철적분광광도법。연구표명,재pH=2~9적용액중,철(Ⅲ)가용염산간알환원지철(Ⅱ),생성적철(Ⅱ)가여린이담비생성은정적귤홍색락합물,기최대흡수파장위506 nm,철농도재0.31~16.00 mg/L범위내여용액흡광도정량호선성관계,선성회귀방정위A=0.20192ρ-0.01164(mg/L),상관계수r=0.9999,검출한위0.157 mg/L,상대표준편차(RSD)위0.58%,표관마이흡수계수ε=3.59×104L.(mol-1cm-1)。
A spectrophotometric method was established to determine iron using 1,10-phenanthroline monohydrate(phen).With the presence of phen,Fe3+was reduced to Fe2+by hydroxylamine hydrochloride at pH 2~9,which facilitated the formation of orange product.The absorbance of orange product was measured at its absorption maximum of 506 nm,a good linear relationship was obtained in the range of 0.31~16.00 mg/L of iron.The linear regression equation was A=0.20192ρ-0.01164(mg/L) with a correlation coefficient of 0.9999 and the apparent molar absorption coefficient of 3.59×104 L/(mol·cm).The detection limit was 0.157mg/L,while R.S.D.was 0.58%.