摘要
目的 建立一种现场测定环境空气中甲醛含量的灵敏、快速、廉价方法。方法 在自行研制的手持式高灵敏光度计的基础上 ,研制一种动态线性范围宽、样品和试剂用量少、分析速度快、无可动部件、灵敏度高、结构简单、轻便耐用、耗电量低的手持式甲醛测定仪 ,同时开发一种甲醛测定专用试剂包。结果 使用本方法测定甲醛的线性范围是0 0 0 1～ 0 3mg/L ,定量检测下限为 0 0 0 1mg/L ,线性相关系数为 0 999,测定的相对误差在± 5 %以内。 结论 本仪器用于环境空气中甲醛的现场测定 ,结果满意。
Objective To etablish a method characterized by high analytical speed,less cost,much more convenience,good accuracy and selectivity.Methods A new portable formaldehyde meter and special reagent packages for determining formaldehyde in air in situ was developed.Results The linear range was 0.001-0.3mg/L and the determination limit was 0.001mg/L.The RE of this method for determining formaldehyde in air was no more than 5%.Conclusion All results of different practical samples were satisfactory though the analytical procedure was extremely simple.
出处
《中国公共卫生》
CAS
CSCD
北大核心
2002年第5期582-583,共2页
Chinese Journal of Public Health
