Determination of Chlorine in Plastics via SrCl by Solid-Sampling High-Resolution Continuum Source Graphite Furnace Molecular Absorption Spectrometry


Tınas H. , Dirak M., Özbek N. , Akman S.

ANALYTICAL LETTERS, cilt.52, ss.1509-1518, 2019 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 52 Konu: 9
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1080/00032719.2018.1553978
  • Dergi Adı: ANALYTICAL LETTERS
  • Sayfa Sayıları: ss.1509-1518

Özet

Solid sampling high resolution continuum source molecule absorption spectrometry (SS-HR-CS MAS) was applied for the determination of chlorine in plastic using the strontium monochloride (SrCl) molecule. For this purpose, 10 mu L of 20 g L-1 strontium (prepared from Sr(NO3)(2)) solution were pipetted with aqueous Cl standards or 0.05 to 4 mg of slivered plastic samples on a platform and introduced into the furnace. Chlorine was determined with the molecular absorption of SrCl at 635.862 nm using 1100 degrees C and 2200 degrees C for the pyrolysis and vaporization temperatures, respectively. Aqueous standards were used for calibration. The accuracy of the method was evaluated using a certified polyethylene reference material. The limit of detection and characteristic mass values of the method were 2.5 ng and 0.4 ng, respectively. The chlorine concentrations in various polyethylene beverage containers were determined.