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本文对非接触者和不同浓度甲醛接触者尿中甲酸的测定结果进一步证实:非接触人群中尿甲酸排泄存在一定的昼夜波动规律,较低浓度接触对尿甲酸排泄影响不明显;较高浓度(接近现行卫生标准)接触人群尿甲酸排泄发生明显变化;午间尿中甲酸浓度与空气中甲醛浓度存在良好的线性相关,提示可在午间收集尿样作监测。本文为选择体内固有物质作为毒物接触生物监测指标的策略提供了一定依据。
In this paper, non-contact and different concentrations of formaldehyde contact urine urine formacid determination results further confirmed: urinary excretion in non-contact population there is a certain day and night fluctuations, the lower concentration of contact urinary excretion of urine had no significant effect; higher concentrations of Close to the current health standards) contact urine urine formic acid excretion significant changes; noon formic acid concentration and formaldehyde concentration in the air there is a good linear correlation, suggesting that urine samples can be collected at noon for monitoring. This article provides a basis for the selection of in vivo substances as indicators of biological exposure to toxicants.