xrf analyzer Articles

Background Sulfur creates more than nasty odors. Exposure to low levels (0-10ppm) of hydrogen sulfide (H2S) causes irritation of eyes, nose, and throat; higher levels can cause headaches, dizziness, nausea and vomiting, coughing, and breathing difficulty. H2S and numerous other odor-causing compounds are generated as a result of organic material decomposition. In the case of the Muddy River in ...

Aug. 4, 2010

By Thermo Scientific Niton Analyzers

This surface sampling method was developed to provide a reliable, portable procedure that will provide prompt measurement of surface contamination levels of lead. Information gained from samples taken during an initial walk-through portion ...

Jan. 1, 2003

By Thermo Scientific Niton Analyzers

The handheld XRF analyzer - X-MET7000 - offers a rapid and non-destructive solution for screening of tainted and potentially hazardous Chinese drywall and for lead inspection. At the height of the U.S. housing boom, when building materials were in short supply, American construction companies used millions of pounds of imported drywall ...

Jan. 30, 2012

By Oxford Instruments plc

Procedure: Air samples are collected by drawing workplace air, using personal sampling pumps, through 37-mm mixed cellulose ester (MCE) filters mounted in polystyrene cassettes. Samples are prepared for XRF analyses by transferring each filter, along with the support pad, to a special air filter sample holder, specifically designed for a Niton XRF analyzer. Three separate 60-second readings are ...

Jan. 1, 2003

By Thermo Scientific Niton Analyzers

Application Reports of headaches, nosebleeds, central nervous system disorders, and other serious health effects have been reported from those exposed to compounds emitted from Chinese drywall (CDW). Additionally, surface corrosion of metal objects, including jewelry, decorative plumbing fixtures, HVAC coils, and electrical wires have resulted in cosmetic and mechanical damages. These ...

Aug. 3, 2010

By Thermo Scientific Niton Analyzers

Chromated copper arsenate (CCA) has been the most widely used wood preservative for decks, playgrounds and exterior housing structures. However, in recent years, issues surrounding the use of CCA preservative chemical have escalated, ...

Jul. 1, 2003

By Thermo Scientific Niton Analyzers

Eli Lilly and Company (Lilly) operates a waste incineration system located at the Tippecanoe Laboratories in Lafayette, Indiana. This incinerator system includes an Xact multi-metals continuous emissions monitoring system (Xact-CEMS, manufactured by Cooper Environmental Services, LLC) for demonstrating attainment with the Hazardous Waste Combustor MACT for semi-volatile metals, low-volatile ...

Jun. 23, 2005

By Cooper Environmental Services

ABSTRACT Field portable x-ray fluorescence (XRF) continues to gain acceptance as a complement to traditional laboratory testing of metal contaminated soil. The quality of data produced by field XRF varies with site conditions, soil composition, and sample preparation. Quality assurance protocols for the field method usually require that a number of field samples be split and sent to a ...

Jan. 1, 1

By Thermo Scientific Niton Analyzers

X-ray fluorescence (XRF) spectrometry is a non-destructive, analytical method used primarily to detect the metal composition in soil/solids samples. Portable XRF instruments can provide rapid, accurate analysis of heavy metal levels in soil on new construction or redevelopment sites. In response to the growing need for field analysis of metals, many of these units have been adapted for use in the ...

Aug. 4, 2010

By Thermo Scientific Niton Analyzers

OBJECTIVE: To investigate the sources of lead in the environment in children with elevated blood, with the help of a Field Portable X-Ray ...

Jan. 1, 2004

By Thermo Scientific Niton Analyzers

Abstract X-Ray Fluorescence spectrometry (XRF) has been routinely used for alloy testing, determination of Pb in paint, and determination of Cd in plastic. However, its use to screen for toxic elements in food and medicinal products has been surprisingly limited to date. While XRF is less sensitive than atomic spectrometry methods such as ICP-AES and ICP-MS, it offers a number of significant ...

Apr. 9, 2015

By Northern ANI Solutions Ltd.

Soil samples collected in housing areas with potential lead contamination generally are analyzed with flame atomic absorption spectrometry (FAAS) or other laboratory methods. Previous work indicates that field-portable X-ray fluorescence (XRF) analysis is capable of detecting soil lead levels comparable to those detected by FAAS in samples sieved to less than 125 μm in a laboratory. A ...

Mar. 1, 2008

By National Environmental Health Association (NEHA)

Under recent circumstances where attention to the environment is required in every field, there is an increasing need for analysis of hazardous substances included in products such as electrical and electronic equipment, and automobiles, as triggered by the enforcement of the RoHS Directive of the European Union (EU). As part of this trend, the X-ray fluorescence analyzer (XRF) plays an important ...

Sep. 23, 2008

By HORIBA Europe GmbH

ASTM International has developed a number of testing methods for determination of sulfur content that focus on a variety of analyzer technologies but ASTM Method D4294 is the one that focuses on the use of energy dispersive x-ray fluorescence (EDXRF); which offers a relatively low cost analysis method that achieves fast results with limited sample preparation.  The applicable ...

Jul. 21, 2011

By Eastern Applied Research, Inc.

Overview: These training notes provide a brief introduction to x-ray fluorescence (XRF) analysis of soils. XRF has been used to characterize a broad range of materials for over twenty years. Recent advances in digital electronics and semi-conductor technology has yielded very portable XRF analyzers for field analysis of many sample types including soils. These notes will cover the following ...

Jan. 1, 1998

By Thermo Scientific Niton Analyzers

Abstract: As the implementation deadlines approach, the electronics industry is focusing significant efforts on compliance with the Restriction of Hazardous Substances (RoHS) directive and the Waste Electrical and Electrical Equipment (WEEE) directive. The intent of the EU RoHS Directive (2002/95/EC) is to restrict the use of six substances (lead, mercury, cadmium, hexavalent chromium, PBBs and ...

Jan. 1, 2005

By Northern ANI Solutions Ltd.

Abstract Rapid, accurate on site determination of arsenic and heavy metal levels in soil is a powerful tool in efforts to rebuild and revitalize abandoned and under-utilized industrial properties. The EPA is actively spearheading initiatives to encourage assessment, clean-up and re-use of these industrial properties. In the case of heavy metals (often the eight RCRA metals Pb, As, Cd, ...

May 1, 1997

By Thermo Scientific Niton Analyzers

The lead content in recycled glass no longer poses a problem in the glass industry. Cullet recycled by REDWAVE-XRF provides superior results according to glass plants. The lead content in glass is even below the quality limits required by law. Experiences of glass plants and plant operators: The REDWAVE-XRF sorting system by BT-Wolfgang Binder GmbH for separation of leaded pieces of ...

Dec. 4, 2012

By REDWAVE a division of BT-Wolfgang Binder

X- ray fluorescence analysis, in addition to its effectiveness in analysis of inorganic materials such as metals and ceramics, is also effective for the detection and quantitative analysis of minerals and heavy metals in foods. Not only can samples be analyzed directly without conducting time-consuming pretreatment, sensitive and accurate measurement is also possible using simple ...

Mar. 31, 2014

By Shimadzu Scientific Instruments Inc

Positive material identification (PMI) is a powerful methodology for assuring that manufacturing companies operate with greater profit, more efficiency, and the highest possible leveis of safety. The requirement for PMI of alloy materials in refinery systems and petrochemical plant operations has grown dramatically from the late 1970s when it was a rarity, to nearly 100% PMI in today’s risk-based ...

Jan. 2, 2005

By Thermo Scientific Niton Analyzers