Analytical Use of Sodium Rhodizonate

Microfluidic Paper-based Analytical Device for Quantification of Lead Using Reaction Band-length for Identification of Bullet Hole and Its Potential for Estimating Firing Distance

“…However, in the GSR Ca(II), Cu(II) and Zn(II) can react with rhodizonate to produce precipitate complex only in neutral and basic condition. 29 Thus, in tartrate buffer pH 2.8, these ions do not cause any interference effect on Pb(II) detection, since their tolerance limit is larger than 500 mg L -1 .…”

“…However sodium rhodizonate can decompose rapidly in ultraviolet light, particularly if the salt is finely divided in the capillaries of paper. 29 The drying period must be short to avoid decomposition of the reagent. A drying period from 1 -8 min was carried out prior to applying a 200 mg L -1 of Pb(II) solution.…”

“…This might be due to the oxidation of rhodizonate catalyzed by Fe(II). 29 Ba(II) gave a positive error since it can produce a pink precipitate with rhodizonate at pH 2.8. However, in the GSR Ca(II), Cu(II) and Zn(II) can react with rhodizonate to produce precipitate complex only in neutral and basic condition.…”

Fast Detection and Chemical Characterization of Gunshot Residues by CMV-GC-MS and LIBS

“…These tests are usually performed in targets to determine shooting distance, but can also be applied to swab samples as a screening method [Berendes et al, 2006;Martiny et al, 2008]. The development of the sodium rhodizonate test is attributed to Feigl and Suter but the use of this reagent was first published by Feigl in 1924[Feigl et al, 1942. The sodium rhodizonate test can detect the presence of Pb by forming a bright pink color [Feigl et al, 1942;Vanini et al, 2014].…”

“…The development of the sodium rhodizonate test is attributed to Feigl and Suter but the use of this reagent was first published by Feigl in 1924[Feigl et al, 1942. The sodium rhodizonate test can detect the presence of Pb by forming a bright pink color [Feigl et al, 1942;Vanini et al, 2014]. The Harrison and Gilroy test consists of first swabbing the hands of a suspect with a cloth moistened with hydrochloric acid (HCl), and then triphenylmethylarsonium iodide was added to allow visualization of Sb followed with the addition of sodium rhodizonate for the detection of Ba and Pb.…”