background: in addition to gas pollutants, many chemicals and air pollutants are in the form of particulate matter. particulate matter consists of a complex mixture of variable sized particles and physicochemical composition. these particles mainly contain minerals including fe, al, ca, k, cu, ti, mn, ni, v and their size, chemical composition and concentration are important to assess the exten...

Activation analysis is one of the major techniques for the determination of many minor and trace elements in a large variety of solid environmental and pollution samples, such as atmospheric aerosols, particulate emissions, fly ash, coal, incineration ash and sewage sludge, etc. Neutron activation analysis of total, inhalable or respirable airborne particulate matter collected on a filter or in...

Addition of trace elements (intended or as impurities) in steel or alloys can completely change the properties of materials; thus, there is a necessity to have reliable analytical techniques to determine major and trace components in this type of material. Also, to solving problems with quality control/quality assurance (QC/QA) in this subject, appropriate certified reference materials should b...

Instrumental neutron activation analysis (INAA) was applied for the accurate and precise determination of minor and trace elements in small-sized aliquants (1 to 2 mg) of two certified reference materials (CRM), NIES No. 8 and NIST 1632c. Four laboratories used either comparative- or k0-INAA, or both, and repeated the analysis more than ten times for each CRM. Based on z-scores and zeta scores ...

Through instrumental neutron activation analysis (INAA) the elemental chemical composition of Salvinia auriculata and Ouro Preto city public water was determined. Elements Ce, Th, Cr, Hf, Sb, Sc, Rb, Fe, Zn, Co, Au, La and Br were quantified. High chromium concentration was determined in this plant. But, chromium was determined only in low concentrations in the water. The results indicate the g...

some other “finish”, is widely used in determination of the total gold content of heavy-mineral concentrates. Direct instrumental neutron activation analysis (INAA) of the concenrate, which has the advantage of being a nondestructive multi-element technique, is also used. The objective of this study was to compare gold results obtained by the two methods on typical heavy mineral concentrates fr...

Large Sample Neutron Activation Analysis (LSNAA) was applied to perform non-destructive elemental analysis of a ceramic vase. Appropriate neutron self-shielding and gamma ray detection efficiency calibration factors were derived using Monte Carlo code MCNP5. The results of LSNAA were compared against Instrumental Neutron Activation Analysis (INAA) results and a satisfactory agreement between th...

Leishmaniasis patients were treated with N-methylglucamine antimoniate by intravenous injections of 10 or 20 mg of Sb per kilogram of body weight per day for 10 or 20 days. Digests of skin biopsies taken from the site of lesion before and after treatment were analyzed for antimony by instrumental neutron activation (INAA). The detection limit of the assay was 20 ng, and no Sb could be measured ...