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磷酸根离子是一种对作物生长非常重要的土壤速效养分,但由于盲目过量施肥,使其成为导致水体富营养化的最主要因素。研究并开发了一种低成本的钴基磷酸根离子电化学传感器。在一定条件下,采用恒电流沉积法在钴基电极上电沉积纳米钴敏感薄膜,该固态离子选择电极对磷酸根离子浓度的线性响应范围为10-5～10-1 mol/L,线性相关系数为0.994,斜率为-50 mV/decade,检测下限为10-6 mol/L,电极具有较短的响应时间,在60 s内可以达到稳定状态,该电极的研究与开发对土壤速效磷和环境水质中磷酸根的检测研究具有一定的意义。
Abstract：Phosphate ion is one of the most important soil available nutrients for crop growth,however,it becomes the most essential factor that leads to the eutrophication because of the blind and excessive fertilization.A low-cost cobalt-based phosphate ion electrochemical sensor was studied and developed.The nano-cobalt sensitive membrane was prepared on the cobalt-based electrode by the galvanostatic deposition method under certain conditions.The solid-state ion-selective electrode exhibits a linear response to phosphates in the concentration range from10-5 to10-1 mol/L with a linear correlation coefficient of 0.994,a slope of-50 mV/decade and a low detection limit of 10-6 mol/L.Furthermore,the electrode has a shorter response time and can reach steady state within 60 s.The research and development of the ion-selective electrode will have a positive significance for the detection of phosphate in soil available phosphorus and environmental water quality.
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基本信息:
DOI：10.13250/j.cnki.wndz.2019.01.007
中图分类号:TP212
引用信息:
[1]唐敏,许锋,孔德义,等.一种钴基磷酸根电化学传感器的研制[J].微纳电子技术,2019,56(01):40-44+70.DOI:10.13250/j.cnki.wndz.2019.01.007.
基金信息:
安徽省自然科学基金资助项目(1708085QF151);; 传感技术联合国家重点实验室基金课题资助项目(SKT1603)
2018-12-13
2018-12-13