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人体吸收的钛主要从尿排出,测定尿钛有助于了解钛接触者钛吸收情况及正常人钛代谢情况。国外报道的过氧化氢法测钛敏感度为2μg,原子吸收分光光度法敏感度虽高,但因钛不易原子化及有形成难分解的氧化物的趋问,故需要采用高温及无焰法。根据我所现有条件,我们采用DAM法,稍加改进,用于尿钛测定。敏感度可达0.1μg,平均回收率为79.7％。
Titanium absorbed by the human body is mainly excreted from the urine, and the determination of urinary titanium helps to understand the titanium absorption of titanium contact and the normal human metabolism of titanium. Foreign reports of hydrogen peroxide method for the determination of titanium sensitivity of 2μg, atomic absorption spectrophotometry, although the sensitivity is high, but because of titanium is not easy atomization and the formation of refractory oxide tendencies, it requires the use of high temperature and flameless method . According to my existing conditions, we use the DAM method, a slight improvement for the determination of urine titanium. Sensitivity of up to 0.1μg, the average recovery rate of 79.7%.