传感技术学报
傳感技術學報
전감기술학보
Journal of Transduction Technology
2014年
1期
6-11
,共6页
王旭%哈达%张文%万浩%孙启永%李海波%孙斐%王平
王旭%哈達%張文%萬浩%孫啟永%李海波%孫斐%王平
왕욱%합체%장문%만호%손계영%리해파%손비%왕평
LAPS传感器%重金属检测%水路系统%自动量程
LAPS傳感器%重金屬檢測%水路繫統%自動量程
LAPS전감기%중금속검측%수로계통%자동량정
light addressable potentiometric sensor%determination of heavy metals%fluidic system%automatic range controlling
针对水环境重金属检测问题,设计了一种新型的基于光寻址电位传感器( LAPS)的重金属检测仪器。相对于原子荧光光度法等其他方法,该仪器操作简便,无需繁杂的前处理过程,具有自动量程功能以及独立的水路系统。仪器通过ARM开发板与上位机无线通讯,检测过程自动化进行。经验证,仪器可以对水环境酸碱度以及重金属Pb2+浓度进行快速、自动化检测。其中pH的检测范围为5~9,灵敏度为37.321 mV/pH,平均误差为4.4%,满足水环境酸碱度的实测需求。重金属Pb2+的检测范围为10-7~10-1 mol/L,灵敏度为26.43 mV/pPb2+,平均重复率为86.7%,并进行了Zn2+,Cu2+及pH对Pb2+检测的干扰测量。
針對水環境重金屬檢測問題,設計瞭一種新型的基于光尋阯電位傳感器( LAPS)的重金屬檢測儀器。相對于原子熒光光度法等其他方法,該儀器操作簡便,無需繁雜的前處理過程,具有自動量程功能以及獨立的水路繫統。儀器通過ARM開髮闆與上位機無線通訊,檢測過程自動化進行。經驗證,儀器可以對水環境痠堿度以及重金屬Pb2+濃度進行快速、自動化檢測。其中pH的檢測範圍為5~9,靈敏度為37.321 mV/pH,平均誤差為4.4%,滿足水環境痠堿度的實測需求。重金屬Pb2+的檢測範圍為10-7~10-1 mol/L,靈敏度為26.43 mV/pPb2+,平均重複率為86.7%,併進行瞭Zn2+,Cu2+及pH對Pb2+檢測的榦擾測量。
침대수배경중금속검측문제,설계료일충신형적기우광심지전위전감기( LAPS)적중금속검측의기。상대우원자형광광도법등기타방법,해의기조작간편,무수번잡적전처리과정,구유자동량정공능이급독립적수로계통。의기통과ARM개발판여상위궤무선통신,검측과정자동화진행。경험증,의기가이대수배경산감도이급중금속Pb2+농도진행쾌속、자동화검측。기중pH적검측범위위5~9,령민도위37.321 mV/pH,평균오차위4.4%,만족수배경산감도적실측수구。중금속Pb2+적검측범위위10-7~10-1 mol/L,령민도위26.43 mV/pPb2+,평균중복솔위86.7%,병진행료Zn2+,Cu2+급pH대Pb2+검측적간우측량。
A novel system based on light addressable potentiometric sensor( LAPS) was proposed and fabricated for de-termination of heavy metals in water environment. Compared with other detection methods such as atomic fluorescence spectrophotometry,this type of instrument is much easier to use,with the characteristics of automatic range controlling and uncomplicated pretreatment process, etc. The instrument can communicate with computer via ARM wirelessly. Equipped with the independent fluidic system,it can detect pH and Pb2+ concentration in water samples with a fast and automatic response, which has been verified. The detection range of pH unit was 5 to 9, with a sensitivity of 37. 321 mV/pH and mean error of 4. 4%,which meets the requirement of pH detection. The detection range of Pb2+unit was 10-7 to 10-1 mol/L, with a sensitivity of 26. 43 mV/pPb2+ and average recovery rate of 86. 7%. In the meantime,the interference of Zn2+,Cu2+ and pH to Pb2+ detection has also been investigated.