Determination of nickel by differential pulse polarography at a dropping mercury electrode

IUPAC reference method for analysis of nickel in serum and urine by electrothermal atomic absorption spectrometry

“…The Subcommittee is comparing the results of analyses of nickel in biological materials by electrothermal atomic absorption spectrometry with the results obtained by dimethylglyoxime-sensitized differential pulse polarography at a dropping mercury electrode, as described by Flora and Nieboer (16). The Subcommittee is also investigating freeze-dried preparations of serum and urine that might be suitable reference materials for nickel analyses.…”

“…Dilute ammonium hydroxide solution is then added dropwise until the colour is light blue-green. 16 APDC solution (0.5 ml) is added to each tube, and the contents are mixed for 10 sec with a vortex-type mixer. The samples are allowed to stand for five mm; MIBK (0.7 ml) is added to each tube, and the contents of the tube are mixed for 40 sec with a vortex-type mixer.…”

Monitoring of nickel(II) in biological samples using 4-(2-hydroxy-phenylethamino)benzene-1,3-diol by extractive differential pulse polarography

“…The general procedure was then applied to 1 mL of this solution and the obtained results were presented in Table 2. In addition, plant tissues like Umbilicaria muhlenbergii has been examined in detail followed by the reference procedure [13]. The obtained results were compared with the reported method as shown in Table 3.…”

Simultaneous Determination of Nickel and Cobalt in Natural Water and Sediment Samples on an in-situ Plated Mercury Film Electrode by Adsorptive Cathodic Stripping Voltammetry

“…[1][2][3][4][5][6][7][8][9][10] In particular, adsorptive cathodic stripping voltammetry, which utilizes a suitable complexing agent to enhance the electrode behavior of both metals, is considered to be one of the most sensitive methods for their determination. The range of complexing agents that has been employed for this purpose includes 2,2′-bipyridine, dimethylglyoxime, 1-(2-pyridylazo)-2,7-dihydroxynaphthalene and noxime.…”

“…[3][4][5][6][7][8][9][10] In recent years, the use of a mercury film electrode [11][12][13][14] has been reported for either individual or simultaneous determinations of nickel and cobalt. The simultaneous determination of both metals by AdCSV on a mercury film electrode was reported by Economou et al 11 This method involves the use of an ex-situ plated mercury film for simultaneous determination of Ni and Co by square-wave adsorptive stripping voltammetry.…”