浙江师大学报(自然科学版)
浙江師大學報(自然科學版)
절강사대학보(자연과학판)
JOURNAL OF ZHEJIANG NORMAL UNIVERSITY
2001年
1期
53-54
,共2页
铁%分光光度法%酸性铬蓝K%H2O2
鐵%分光光度法%痠性鉻藍K%H2O2
철%분광광도법%산성락람K%H2O2
在pH=9.35的硼砂-HCl体系缓冲溶液中，Fe(Ⅲ)能催化酸性铬蓝K的氧化褪色反应,据此建立了一个测定痕量铁的新催化动力学分光光度法.该方法在所选条件下，lg(A0/A)与Fe(Ⅲ)含量在 0.01μg/mL～0.20 μg/mL范围内呈线性关系，定量检测限为6.4×10-9g/L，ε=3.7×104 L.cm-1mol-1.
在pH=9.35的硼砂-HCl體繫緩遲溶液中，Fe(Ⅲ)能催化痠性鉻藍K的氧化褪色反應,據此建立瞭一箇測定痕量鐵的新催化動力學分光光度法.該方法在所選條件下，lg(A0/A)與Fe(Ⅲ)含量在 0.01μg/mL～0.20 μg/mL範圍內呈線性關繫，定量檢測限為6.4×10-9g/L，ε=3.7×104 L.cm-1mol-1.
재pH=9.35적붕사-HCl체계완충용액중，Fe(Ⅲ)능최화산성락람K적양화퇴색반응,거차건립료일개측정흔량철적신최화동역학분광광도법.해방법재소선조건하，lg(A0/A)여Fe(Ⅲ)함량재 0.01μg/mL～0.20 μg/mL범위내정선성관계，정량검측한위6.4×10-9g/L，ε=3.7×104 L.cm-1mol-1.
A new catalytic spectrophotometric method for the determination of trace Fe(Ⅲ) has been developed which has higher sensitivity and selectivity. The method was based on the catalytic effect of Fe(Ⅲ) on the oxidation of acid Chrome Blue K by hydrogen peroxide.The linear range for the determination of Fe(Ⅲ) was 0.01 μg /mL～0.20 μg/mL and the detection limit is 6.4×10-9 g/L.
