Speciation of chromium in steelmaking solid wastes by selective retention on ion-exchange media and determination by isotope dilution inductively coupled plasma mass spectrometry

The solubility of Cr(III) and Cr(VI) compounds in soil and their availability to plants

“…The LOD, calculated according to the equation: LOD = x bl +3s bl (n = 25), was found to be 0.7 g l −1 for a 10 l sample aliquot. The LOD is comparable to that reported earlier [28,29].…”

Trace determination of chromium(VI) in environmental water samples using innovative thermally reduced graphene (TRG) modified SiO2 adsorbent for solid phase extraction and UV–vis spectrophotometry

“…According to the results in Table 2, these ions had no significant interference on determination of Cr (VI) up to the tested ratios. In addition, the effect of some anions that may be present in the environmental water samples including SO 4 2-, NO 3 -, Cl -, CO 3 2-and PO 4 3-was also investigated. These mineral ions had no interference in the determination of Cr (VI) with the ratios of 400-10 4 .…”

“…Several methods such as ion chromatographychemiluminescence (IC-CL) [3], inductively coupled plasma-mass spectrometry (ICP-MS) [4], flow-injection analysis-furnace atomic absorption spectrometry (FIA-FAAS) [5], flame atomic absorption spectrometry [6], UV-Vis spectrophotometry [7], and capillary electrophoresis (CE) [8] have been used for determination of trace amounts of Cr(VI). The sensitivity of chemiluminescence and atomic absorption spectrometry may not be enough for 3 natural water analysis.…”

Sequential eluent injection technique as a new approach for the on-line enrichment and speciation of Cr(III) and Cr(VI) species on a single column with FAAS detection

“…Due to the low concentration levels of chromium species in complex water matrices, combinations of FAAS with high selectivity for speciation and low detection limit for determination are required. In this regard, many preconcentration procedures such as coprecipitation [7,8], solvent extraction [9][10][11], and ion exchange [12,13] have been developed for the determination of chromium species in different samples.…”