and then applied the benchmark dose approach to determine critical concentration of blood lead which led to adverse effect on neural system, renal tissue and haemal tissue in occupational lead exposure and to seek the foremost sensitive index of them.

• 然后应用基准剂量(Benchmark dose BMD)方法探索职业性铅接触引起神经系统、肾组织和血液系统不良效应的血铅临界浓度，同时寻找职业性铅接触引起不良效应的早期敏感指标。