透過您的圖書館登入
IP:3.142.197.212
  • 期刊

黏粒溶磷菌修飾電極的電化學分析研究

Electrochemical Study of Clay-modified Electrodes Containing Phosphate Solubilizing Bacteria

摘要


黏粒修飾電極可用於重金屬、有機化合物、農藥及生化物質上的偵測,其開啟了近二十多年來許多學者專家投入這方面的研究。以溶磷菌夾在標準黏土礦物層中所製成的修飾電極,利用具有電化學活性離子作為模式偵測物,進行溶磷菌特性的電化學分析研究。試驗結果指出六種黏土礦物修飾電極在有無菌體存在時對Ru(NH3)6(上標 3+)測得之循環伏安圖的差異比Fe(CN)6(上標 3-)小很多,顯示Fe(CN)6(上標 3-)比Ru(NH3)6(上標 3+)較能顯現出溶磷菌存在時的電化學特性。不同掃描速率在循環伏安圖上有明顯的差異,其中以Fe(CN)6(上標 3-)所表現的差異性比Ru(NH3)6(上標 3+)較能指出菌體的特性,且坡縷石(PFl-1)在有無溶磷菌時,於5mV/s掃描速率下之Fe(CN)6(上標 3-)伏安圖的差異性最大,其為最能表現出黏粒菌體修飾電極在溶磷菌特性鑑別上的可行性。

並列摘要


Clay-modified electrodes were applied in both environmental and biomedical analysis to determine heavy metals, pesticides and biochemical important compounds. We report here the electrochemical behavior of some model analytes in clay-modified electrodes containing phosphate solubilizing bacteria. The results clearly indicated the difference of electrochemical behavior between Ru(NH3)6(superscript 3+) and Fe(CN)6(superscript 3-) in presence/absence of phosphate solubilizing bacteria in six clay-modified electrodes. Overall, the Fe(CN)6(superscript 3-) model analyte could reveal more of the electrochemical character of phosphate solubilizing bacteria than that of Ru(NH3)6(superscript 3+). Palygorskite (PFl-1) shows the best resolved characteristics of phosphate solubilizing bacteria in clay-modified electrodes.

延伸閱讀