【摘要】 试验了在盐酸磷酸介质中铬（Ⅵ）与苯基荧光酮的氧化反应。结果表明，黄色的苯基荧光酮被氧化成橙红色产物，其最大吸收波长为４９２ｎｍ。铬（Ⅵ）含量在０μｇ／５０ｍＬ～５０μｇ／５０ｍＬ范围内遵守比耳定律，表观摩尔吸光系数ε４９２＝２１３×１０４。用于废水中铬的测定，结果满意。更多还原

【Abstract】 This paper presented the determination of chromium (Ⅵ) by oxidation coloration spectrophotometry with HCl H 3PO 4 medium. Yellow pheyfluorone was oxidized by chromium (Ⅵ) and changed into an orange red product with maximum absorption wavelength 492 nm. Beer′s law was obeyed in the range of 0 μg/50mL～5 μg/50mL chromium(Ⅵ) and apparent mole absorption coefficient (ε 492 ) was 2 13×10 4. The method has been applied to the determination of chromium (Ⅵ) in wastewater with satisfactory results.更多还原