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微量硼的姜黄素直接比色法已有许多报导,但用来测定钢中全硼的报导却不多。本工作在前人工作的基础上着重研究了样品溶解,水及主体元素高价铁干扰的消除;拟定了以硫-磷酸溶样、乙酸丁酯脱水以及用抗坏血酸-次亚磷酸钠消除高价铁干扰的方法,用于测定合金钢中全硼量,操作较简便,测定结果满意。方法灵敏度可达5×10~(-4)％。(一)仪器及主要试剂
There have been many reports of the trace amount of boron curcumin direct colorimetric method, but there are not many reports for the determination of total boron in steel. This work focuses on the dissolution of the sample, water and the elimination of high-level iron interference of the main elements on the basis of previous work; prepared with sulfur-phosphoric acid solution, dehydration of butyl acetate and ascorbic acid - sodium hypophosphite to eliminate high-price iron interference Method for the determination of total boron in the alloy steel, the operation is relatively simple, the results were satisfactory. The sensitivity of the method can reach 5 × 10 ~ (-4)%. (A) instruments and major reagents