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铍是一种对人体具有潜在毒性的元素,它会在人的肺内滞留,引起中毒和疾病。因而建立灵敏而准确的测定铍的分析方法,在环保中具有重要意义。常用来测定铍的方法有分光光度法、光谱法和荧光法等。由于铍比较容易与一些有机试剂形成会发生荧光的络合物,因此常用荧光法测定。曾用来测定铍的荧光试剂有桑色素、1-氨基-4-羟基蒽醌、1.4-二羟基蒽醌、2-(邻-羟基苯基)-苯间氮硫茂等十多种。1964年,我们发现在中性介质中铍离子与钙试剂(α-萘酚-4-磺酸-偶氮-2-羟基-3-萘酸)所形成的络合物在紫外光照射下会发生强烈的青色荧光,并用国产沪江klett型荧光计建立了浓度在10—120ppb范围内的铍的荧光分析法。最近,我们应用我校精密仪器厂生产的YF-1
Beryllium is a potentially toxic element of the human body that can persist in the lungs of humans, causing poisoning and disease. Therefore, the establishment of sensitive and accurate method for the determination of beryllium is of great significance in environmental protection. Commonly used to determine beryllium spectrophotometry, spectrometry and fluorescence methods. Because beryllium is relatively easy to form complexes with some organic reagents that fluoresce, it is commonly measured by fluorescence. Fluorescent reagents that have been used to determine beryllium include morin, 1-amino-4-hydroxyanthraquinone, 1.4-dihydroxyanthraquinone and 2- (o-hydroxyphenyl) -benzothiazole. In 1964, we found that the complex formed by beryllium ion and calcium reagent (α-naphthol-4-sulfonic acid-azo-2-hydroxy-3-naphthoic acid) A strong cyan fluorescence occurred, and the use of domestic Shanghai klett-type fluorometer established a concentration of 10-120ppb within the range of beryllium fluorescence analysis. Recently, we applied the YF-1 produced by our school precision instrument factory