Concepts in analytical chemistry

Potts, Philip J.

doi:10.1007/978-94-015-3988-3_1

Cited by 3 publications

(2 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Advances in analytical methods and the expansion in the use of analytical instruments have facilitated the precise chemical compositional analysis of rock samples. The preparation of samples before analysis includes cutting, crushing, splitting, and pulverizing (e.g., Terashima et al, 1990;Potts, 2003). Such processes generally include an iron jaw-crusher, iron mortar and tungsten carbide mortar for crushing, and an agate mill and tungsten carbide mill for pulverizing.…”

Section: Introductionmentioning

confidence: 99%

Contamination from mortars and mills during laboratory crushing and pulverizing

Yamasaki

2018

Bull. Geol. Surv. Japan

View full text Add to dashboard Cite

Contamination of rock samples from laboratory equipment during crushing and pulverizing was investigated. Pulverization using iron and tungsten carbide mortars, and agate and tungsten carbide mills produced three suites of powders. Whole-rock data from the analyses of the three suites of samples enabled assessment of the degree of contamination of samples by coarse crushing and pulverization. The samples analyzed for major and trace elements compositionally represent basalt, basaltic andesite, dacite, and rhyolite. The results from the analyses of major elements exhibit insignificant contamination from the mortars and the mills. The heterogeneity of rock chips explains the compositional differences observed. The tungsten carbide mill contaminated samples with tungsten and cobalt. The significant scatter of other trace elements data is attributed to sample heterogeneity, with no systematic effect from contamination.

show abstract

Section: Introductionmentioning

confidence: 99%

Contamination from mortars and mills during laboratory crushing and pulverizing

Yamasaki

2018

Bull. Geol. Surv. Japan

View full text Add to dashboard Cite

show abstract

“…Sample preparation of rocks, prior to wet chemical analysis, includes crushing, splitting, and powdering (Potts, 2003). These processes homogenize rock samples and facilitate subsequent decomposition.…”

Section: Introductionmentioning

confidence: 99%

Contamination introduced during rock sample powdering: Effects from different mill materials on trace element contamination

Takamasa

Nakai

2009

Geochem. J.

View full text Add to dashboard Cite

We examined blanks during powdering processes for thirty-three trace elements using ICP-MS (inductively coupled plasma mass spectrometry). Quartz sand was used as target of powdering with grinding mills of several kinds: an agate hand mill, agate ball mill, Fe hand mill, alumina ceramic hand mill and artificial crystalline quartz hand mill.The results show that the artificial crystalline quartz hand mill is the purest grinder among the analyzed ones. This grinder is suitable for soft rock samples such as limestone. The alumina ceramic hand mill can reduce contamination, except for Cs, W and Pb. The agate hand mill and the agate ball mill introduce contamination whose level is depending on the individual device due to heterogeneity of the natural agate. The Fe hand mill introduces contamination of some siderophile elements such as Mo and W. The results of this study emphasize careful choice of a grinding mill for sample pulverizing.

show abstract

Physical, Chemical, and Microbiological Characterization of Kettara Mine Tailings, Morocco

et al. 2022

View full text Add to dashboard Cite

The mining industry is of major importance to Morocco’s economy. However, the abandoned pyritic mines are a source of potentially toxic elements that can cause the disruption of the surrounding ecosystems, constituting a huge threat to wellbeing and human health. The present study aimed to analyze the physical and chemical characteristics of different types of tailings and to investigate the microbial populations of acidophilic bacteria involved in the oxidation of pyrite. Coarse and fine tailings collected from different zones of the mine (dike and pond) at two different depths (oxidized and non-oxidized residues) were analyzed for their pH, electrical conductivity, total organic carbon, total nitrogen, available P, major elements, and pseudo-total metal concentrations. The abundance of acidophilic bacteria was determined, and some acidophilic bacterial strains were isolated and tested for their metal tolerance. Tailings showed a pH ≈ 2, very low nutritional content, and high concentrations of Cu, As, Zn, and Pb, which were higher in the non-oxidized samples. The microbial counts of iron- and sulfur-oxidizing bacteria were higher than heterotrophic bacteria, with the highest numbers detected in the oxidized fine tailings. The five acidophilic bacteria isolated from the tailings were affiliated to genera Alicyclobacillus and Sulfobacillus, commonly found in this kind of environment.

show abstract

Concepts in analytical chemistry

Cited by 3 publications

References 50 publications

Contamination from mortars and mills during laboratory crushing and pulverizing

Contamination from mortars and mills during laboratory crushing and pulverizing

Contamination introduced during rock sample powdering: Effects from different mill materials on trace element contamination

Physical, Chemical, and Microbiological Characterization of Kettara Mine Tailings, Morocco

Contact Info

Product

Resources

About