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镁是人体必需的主要元素之一,是多种酶的激活剂。机体缺镁易产生心肌代谢改变,易发生心肌纤维坏死与充血性心力衰竭.不少研究证实糖尿病患者头发中镁的浓度偏低等。故寻找一种准确测定人发中镁含量的方法极有意义。本文研究了在Tween-20表面活性剂存在下,镁与偶氮氯膦I(CPA I)的适宜显色条件,在pH 9.16～11.45硼砂缓冲溶液中,得到灵敏度较高,稳定性较好的显色体系,最大吸收波长为574nm,表观摩尔吸光系数ε_(574)为6.98×10~4。配合物形成迅速,在室温下
Magnesium is one of the main essential elements of the human body, is a variety of enzyme activators. Magnesium deficiency is easy to produce metabolic changes in the body, prone to myocardial fibrosis and congestive heart failure.Many studies have confirmed that the concentration of magnesium in the hair of diabetic patients is low. Therefore, to find an accurate determination of human hair in the method of great significance. In this paper, the suitable conditions for the color development of magnesium and chlorophosphonazo I (CPA I) in the presence of Tween-20 surfactant were studied. High sensitivity and good stability were obtained in the borax buffer solution at pH 9.16-11.45 The colorimetric system has a maximum absorption wavelength of 574 nm and an apparent molar absorptivity ε_ (574) of 6.98 × 10 -4. The complex formed rapidly at room temperature