原子吸收分光光度计的故障及排除

2025-03-09 16:48:57
推荐回答(1个)
回答1:

故障现象 故障原因 排除方法 一.总电源指示灯不亮 1.一起电源线断路或接触不良
2.仪器保险丝熔断
3.保险管接触不良 1.将电源线接好,压紧插头
2.更换保险丝
3.卡紧保险管使接触良好 二.初始化中波长电机出现X 1.空心阴极灯是否安装
2.光路中有物体遮挡
3.通信系统联系中断 1.重新安装灯
2.取出光路中的遮挡物
3.重新启动仪器 三.元素灯不亮 1.电源线是否脱焊
2.灯电源插座是否松动
3.灯坏了 1.重新安装灯
2.更换灯位
3.换灯 四.寻峰时能量过低,能量超上限 1.元素灯不亮
2.元素灯位置不对
3.灯老化 1.重新安装空心阴极灯
2.重设灯位
3.更换新灯 五.点击“点火”,无高压放电打火 1.空气无压力
2.乙炔未开启
3.废液液位低
4.乙炔泄漏,报警 1.检查空压机
2.检查乙炔出口压力
3.加入蒸馏水
4.关闭紧急灭火 六.测试基线不稳定、噪声大 1.仪器能量低,倍增管负压高
2.波长不准确
3.元素灯发射不稳定 1.检查灯电流
2.寻峰是否正常
3.更换已知灯 七.标准曲线弯曲 1.光源灯失气
2.工作电流过大
3.废液流动不畅
4.样品浓度高 1.更换灯或反接
2.减小电流
3.采取措施
4.减小试样浓度 八.分析结果偏高 1.溶液固体未溶解
2.背景吸收假象
3.空白未校正
4.标液变质 1.调高火焰温度
2.在共振线附近重测
3.使用空白
4.重配标液 九分析结果偏低 1.试样挥发不完全
2.标液配制不当
3.试样浓度太高
4.试样被污染 1.调整撞击球和喷嘴相对位置
2.重配标液
3.降低试样浓度
4.消除污染

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