Low pressure ion chromatography with a low cost paired emitterÔÇôdetector diode based detector for the determination of alkaline earth metals in water samplesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The use of a low pressure ion chromatograph based upon short (25 mm ├ù 4.6 mm) surfactant coated monolithic columns and a low cost paired emitterÔÇôdetector diode (PEDD) based detector, for the determination of alkaline earth metals in aqueous matrices is presented. The system was applied to the separation of magnesium, calcium, strontium and barium in less than 7 min using a 0.15 M KCl mobile phase at pH 3, with post-column reaction detection at 570 nm using o-cresolphthalein complexone. A comparison of the performance of the PEDD detector with a standard laboratory absorbance detector is shown, with limits of detection for magnesium and calcium using the low cost PEDD detector equal to 0.16 and 0.23 mg LÔêÆ1, respectively. Finally, the developed system was used for the determination of calcium and magnesium in a commercial spring water sample.