各种体液中生物化学指标的改变,往往是工作环境中有害因素对机体影响的早期的和比较灵敏的指征。这些改变是机体对有害因素的反应,或可表明健康已受影响;也可能只是可逆性的体内平衡和代偿性反应;此外,还可能是一种轻微的细胞损伤,可以再生,而使健康免受损害。因此,必须对生化指标作定量的评价,并确定作用量与机体反应的关系。由于分析技术的进步,使许多前所未知的生化指标得到识别和定量,但由于设备条件的限制,或意义尚待确定等原因,许多指标尚处于探索阶段。选择生化指标的一项重要标准是视其对有害因素的接触程度,和健康是否濒于或已经发生损害,能否有预报的价值。由于细胞和组织对许多外界应激作用的反应方式只有有限的几 Changes in a variety of biochemical indicators of body fluids, often the working environment of harmful factors on the body’s early and more sensitive indications. These changes are the body’s response to harmful factors, or may indicate that health has been affected; may also be only reversible in vivo balance and compensatory response; In addition, it may be a slight cell damage, can be regenerated, leaving health From damage. Therefore, we must make a quantitative evaluation of biochemical indicators, and determine the relationship between the amount of action and the body response. Due to advances in analytical techniques, many of the previously unknown biochemical indicators are identified and quantified, but many indicators are still at an exploratory stage due to equipment limitations or uncertainties. An important criterion for selecting a biochemical indicator is its predictability based on its exposure to harmful factors and whether the health is on the verge of or has been compromised. There are only a few ways in which cells and tissues respond to many external stressors