aqua regia


Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.

ni·tro·hy·dro·chlor·ic ac·id

(nī'trō-hī'drō-klōr'ik as'id),
An extremely caustic mixture that contains 18 parts nitric acid and 82 parts hydrochloric acid.
Synonym(s): aqua regia, aqua regalis, nitrimuriatic acid

aqua regia

Latin for a fuming, highly corrosive mixture of nitric and hydrochloric acids in a 1:3 ratio, so known as it dissolves noble (regal) metals gold and platinum.
Mentioned in ?
References in periodicals archive ?
However in aqua regia and nitric acid its amount was 12.502 and 6.920 ppm respectively.
Comparative Study of Different Metals in Rocks of Heroshah Malakand Pakistan
The results demonstrate the reliability of the aqua regia method for heavy element analysis although concentrations were high which may be attributed to various factors like acid interference, external contaminations (although a blank was used as a precaution), and technical errors.
Levels of lead and cadmium in hair and saliva of school children in Ceres District, South Africa
Heavy metal concentrations (mg/kg) of soils by aqua regia digestion Samples Cu Zn Cd Pb Sites No.
Heavy metal distribution, bioaccessibility, and phytoavailability in long-term contaminated soils from Lake Macquarie, Australia
Briefly, the samples were digested with 10 ml of HFfor one hour, and with 20ml of aqua regia till dryness.
Determination of mercury in the wild plants with their soils along Indus, Gilgit and Hunza rivers
Cold vapor S (Method Code: CV02) were used for Mercury (Hg) determination and ICP-OES method (Code: IC01) were used after aqua regia digest for Ag, As, Bi, Cu, Mo, Pb, Sb, Te & Zn.
Western Mining Limited (ASX:WMN) Second Exploration Phase Completed on Persada Tenement
The concentration of Pb in samples was found to be in the range of 43-58.5, 26-35.5, 17- 30, 11-18.5, 22-30.5, 27-37.5, 36-48 and 2- 6.5 mg/kg by 1MW (microwave- assisted wet digestion), 2AW (wet digestion with HNO3 and H2O2 mixture), 2BW (wet digestion with mixture of HNO3 and HClO4), 2CW (wet digestion with aqua regia), 2DW (wet digestion with reverse aqua regia), 2EW (wet digestion with mixture of HNO3 and H2SO4), 2FW (wet digestion with mixture of HNO3 and HF) and 3DD (Dry digestion in Muffle furnace), respectively.
Comparison of Dry, Wet and Microwave Digestion Methods for the Determination of Pb in Commercially Available Poultry Feed Samples in Pakistan
It will even resist Aqua Regia at room temperature; particularly notable as this mixture of hydrochloric and nitric acids is capable of dissolving noble gold.
Increasing component life: Hardide Plc looks at ways of putting hard coatings on critical components
17 Which two acids are combined to make aqua regia, one of the few reagents able to dissolve gold?
POST PUZZLER: 50 for fun; Phil Brown's trivia quiz
These days she contributes her verse and commentary to madpoetry.org and has her own website at www.fibitz.com "Aqua Regia" is a little chapbook compendium of her own very special prose poetry that entertains, reminisces, and occasional inspires thoughtful reflection.
Aqua Regia
The elemental composition of the sediments was measured by ICP-OES following an aqua regia (3 : 1 HCl : HN[O.sub.3]) microwave digestion.
Chemical changes during oxidation of iron monosulfide-rich sediments
Prepared samples are then shipped to MS Analytical Services (MSA), an ISO 9001-2008 laboratory in Langley, BC, Canada, where samples are assayed for a multi-element suite (MSA code IMS-136, 15.0 g split, Aqua Regia digestion, ICP-AES/MS finish) and gold by Fire Assay (MSA code FAS-111, 30 g fusion, AAS finish).
Cornerstone Capital Resources Inc. - Sunstone earns 51% ownership in the Bramaderos gold-copper project in Ecuador

Medical browser ?
Full browser ?