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, vol.65, no.3, pp.244-248, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 65 Issue: 3
  • Publication Date: 2010
  • Doi Number: 10.1134/s1061934810030068
  • Journal Name: JOURNAL OF ANALYTICAL CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.244-248
  • Kocaeli University Affiliated: Yes

Abstract

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.