CAJ | 학술논문

pH 7.0的Britton-Robinson(B-R)缓冲溶液中,结晶紫在250nm波长处有最大吸收,少量糖精钠的存在可使结晶紫在该波长处的吸收峰显著增强.在0.008-44μg/mL范围内,体系的吸光度的增强与糖精钠浓度呈良好的线性关系(r=0.9994),检出限为0.004μg/mL,回收率在98.1%-108.3%之间,该法用于食品中糖精钠含量的测定,与国标法(高效液相色谱法)对照,结果满意.
pH 7.0적Britton-Robinson(B-R)완충용액중,결정자재250nm파장처유최대흡수,소량당정납적존재가사결정자재해파장처적흡수봉현저증강.재0.008-44μg/mL범위내,체계적흡광도적증강여당정납농도정량호적선성관계(r=0.9994),검출한위0.004μg/mL,회수솔재98.1%-108.3%지간,해법용우식품중당정납함량적측정,여국표법(고효액상색보법)대조,결과만의.
In pH 7.0 Britton-Robinson(B-R)buffer solution,the absorbance of crystal violet at 250nm was enhanced by the o-sufobenzoic acid imide(Na)markedly.There is a good linear relationship in the range of 0.008-44vg/mL(r=0.9994)between the o-sufobenzoic acid imide(Na)concentration and absorbance.The detection limit is 0.004μg/mL,the average recovery is between 98.1%-108.3%.It has been used to the determination of o-sufobenzoic acid imide(Na)in food,compared with HPLC,and the results are satisfactory.