The toxicity characteristic leaching procedure (TCLP) is one test used by the U.S. Environmental Protection Agency (EPA) to determine if a waste material is hazardous; the TCLP test is widely used by the environmental testing community. The elements of concern for toxicity are arsenic, barium, cadmium, chromium, lead, mercury, selenium, and silver. As an environmental forensic laboratory, the N...

Hard X-ray fluorescence (XRF) microscopy offers unparalleled sensitivity for quantitative analysis of most of the trace elements in biological samples, such as Fe, Cu, and Zn. These trace elements play critical roles in many biological processes. With the advanced nano-focusing optics, nowadays hard X-rays can be focused down to 30 nm or below and can probe trace elements within subcellular com...

The X-Ray Flash (XRF), 031203 with a host galaxy at z = 0.1055, is, apart from GRB 980425, the closest γ-Ray Burst (GRB) or XRF known to date. We have monitored its host galaxy from 1–100 days after the burst. In spite of the high extinction to the source and the bright host, a significant increase and subsequent decrease has been detected in the apparent brightness of the host, peaking between...

Abstract Mineral distributions can be determined in drill core samples from a Carlin-type gold deposit, using micro-X-ray fluorescence (µXRF) raster data. Micro-XRF data were collected Bruker Tornado µXRF scanner on split (~25 × 8 cm) with at spatial resolution of ~100 µm. AMICS software was used to identify mineral species data, which revealed that many individual sample spots mixtures due the...

Bone lead measurements can assess long-term lead dosimetry because the residence time of lead in bone is long. Bone lead measurements thus complement blood and plasma lead measurements, which reflect more short-term exposure. Although the noninvasive, in vivo measurement of lead in bone by X-ray fluorescence (XRF) has been under development since the 1970s, its use is still largely confined to ...

available online at http://meteoritics.org 1 © Meteoritical Society, 2004. Printed in USA. Is the transition impact to post-impact rock complete? Some remarks based on XRF scanning, electron-microprobe, and thin section analyses of the Yaxcopoil-1 core in the Chicxulub crater J. SMIT,1* S. VAN DER GAAST,2 and W. LUSTENHOUWER1 1Faculty of Earth and Life Sciences, Vrije Universiteit, de Boelaan 1...

Iodine is enriched and stored in the thyroid gland. Due to several factors, the size of the thyroid iodine pool varies both between individuals and within individuals over time. Excess iodine as well as iodine deficiency may promote thyroid cancer. Therefore, knowledge of iodine content and distribution within thyroid cancer tissue is of interest. X-ray fluorescence analysis (XRF) and secondary...