Differential pulse polarographic determination of ultra trace nickel in natural waters after solid phase extraction Full Paper
نویسندگان
چکیده
The determination of heavy metal ions, such as nickel, in environmental and biological samples is very importance and can hardly be overemphasized because they have undoubtedly a serious potential hazard to the human organism. Nickel was long thought to be essential to plants and some domestic animals[1], but not considered to be a metal of biological importance until 1975, when Zerner discovered that urease was a nickel enzyme[2-3]. It is known that inhalation of nickel and its compounds can lead to serious problems, including naMahmood Payehghadr*, Mahsa Mirzaei Department of Chemistry, Payame Noor University, 19395-3697 Tehran, (IRAN)
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