A copper(I) iodide paper for the detection and determination of the concentration of mercury vapour in the workplace atmosphere

Abstract

The development and preparation of a test paper for mercury in air is described, A measured volume of air is drawn through a silica gel-loaded filter-paper coated with a mixture of copper(1) iodide and sodium carboxymethylcellulose, and in the presence of mercury a pink stain is produced. The paper has been validated in the laboratory and a factory for the reliable determination of mercury vapour in air at concentrations up to 100 pg ~n -~.

One-Pot Synthesis of Copper Iodide-Polypyrrole Nanocomposites

“…Copper iodide (CuI) has a wide application in nonlinear optics [1,2], solar cells development [3], photocatalysis [4], photoluminescention [5], electrophysics [6,7] and conventional analytical chemistry, i.e., mercury detection [8]. Apart from those, CuI is used as a perspective catalyst in a large number of organic synthesis, viz., Heck-types reactions [9,10], Stills-types [11], Ullmann-type routes [12][13][14][15][16][17][18][19] Suzuki-Miyaura and Sonogashira reactions of cross-coupling [20][21][22] and many others [19,[22][23][24][25][26][27].…”

A rapid method for the determination of mercury in mainstream cigarette smoke by two-stage amalgamation cold vapor atomic absorption spectrometryPresented at 55th Tobacco Science Research Conference, Greensboro, NC, USA, September 2001.

“…However, the gaseous mercury can be selectively trapped if filter media are pretreated or impregnated with chemicals, for example, KI-I 2 , CdS, Se, or cuprous iodide. 8,9 Cryogenic collection is infrequently used because the water vapor in the sample matrix must be removed first to avoid clogging of traps. A liquid sorbent containing acidic potassium permanganate or iodine monochloride solution is capable of collecting mercury by chemical oxidation or complexation.…”

Sorbents for mercury removal from flue gas

“…Some of the metal halides have been tested for their ability to promote activated carbon or aluminosilicate sorbents, or as sorbents by themselves. These compounds include alkali metal salts [24,25,40,43], alkaline earth salts [40], copper halides [24,43], iron halides [24], aluminum halides [24], and noble metal halides [44]. It is likely that base metal halides aid in the removal of mercuric chloride by chemical reaction to form a metal halomercurate:…”

“…Crisp [43] used CuI impregnated paper to detect and determine elemental mercury in air at room temperature. The paper was found to change color in the presence of elemental mercury in concentrations of 50 -100 micrograms/m 3 ; a pink stain was produced.…”

“…In addition, many chemicals that increase the capacity of activated carbons for mercury have been examined. These chemicals, which include halides [24,25,40,43,44], sulfides [23,28], sulfur [16][17][18][21][22][40][41][42]64,73], and lime [8,9,16], are called promoters. The experimental apparatus and scale of the different investigations varied considerably.…”