Spectrophotometric Determination of Total Inorganic Arsenic with Hexamethylene Ammonium-Hexamethylenedithiocarbamate in Nonionic Triton X-100 Micellar Media


Karayunlu S., Ay U.

JOURNAL OF ANALYTICAL CHEMISTRY, cilt.65, ss.244-248, 2010 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 65 Konu: 3
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1134/s1061934810030068
  • Dergi Adı: JOURNAL OF ANALYTICAL CHEMISTRY
  • Sayfa Sayısı: ss.244-248

Özet

We have developed a cost-effective and sensitive spectrophotometric method for the determination of arsenic at trace level using a new reagent, hexamethylene ammonium-hexamethylenedithiocarbamate (HMA-HMDTC). Here we show that arsenic reacts with HMA-HMDTC in acidic conditions to yield the As(HMDTC)(3) complex. We studied the Beer's law at 256 nm, which showed linearity over the concentration range 0.2-1.0 mu g/mL of arsenic. We have shown that molar absorptivity, Sandell's sensitivity and the detection limit of the method are 6.06 x 10(4) L/mol cm, 0.0012 mu g/cm(2) and 0.060 mu g/mL, respectively. We have applied this new method to the determination of arsenic in drinking water.