根据我们合成的新试剂N-烯丙基-N′-(对苯磺酸钠)硫脲,在酸性溶液中(如HAc、HNO_3、H_2SO_4、HCl等)与Fe~(3+)生成桔红色络合物,在碱性溶液中(职NaOH、NH_3·H_2O、(NH_4)_2CO_3等)与Ag~+生成褐黄色络合物的性质,进行了鉴定Fe~(3+)和Ag~+的条件试验。用该试剂鉴定Fe~(3+),其介质范围比经典的亚铁氰化钾试法和硫氰酸盐试法大,选择性也比上述两试法高。用于鉴定Ag~+,灵敏度和选择性,都超过了盐酸试法。 According to the new reagent N-allyl-N ’- (sodium p -benzenesulfonate) thiourea synthesized by our company, it produces orange-red with Fe 3+ in acidic solution such as HAc, HNO 3, H 2 SO 4, Complex, the formation of brown complex in alkaline solution (NaOH, NH_3 · H_2O, (NH_4) _2CO_3, etc.) with Ag ~ + and the characterization of Fe ~ (3+) and Ag ~ + Condition test. The reagent used to identify Fe ~ (3+) has a wider range of media than the classical potassium ferrocyanide and thiocyanate test methods, and the selectivity is also higher than the above two test methods. Used to identify Ag ~ +, sensitivity and selectivity, all over the hydrochloric acid test.