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A new surface morphological and elemental imaging system was built by using low power atmospheric pulsed spark discharge optical emission spectrometry (PSD-OES). This PSD-OES can well excite atomic lines of iron, chromium, zinc, copper and more. Optical emission intensity is affected by the distance between electrode and sample surface significantly when the electrode is very close to sample, enabling...
A simple, sensitive and interference-free method was proposed for the determination of arsenic, based on the generation of volatile arsenic trichloride coupled with atomic fluorescence spectrometry. Thiourea, together with l-ascorbic acid, was used to reduce As(V) to As(III), and the chloride generation was based on the reaction between As(III) and hydrochloric acid. Under the optimized experimental...
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