Improving Accuracy, Precision, Detection Limits, and Sample Throughput in PGAA Using Cold and Thermal Neutrons and Element Ratios

Published

December 28, 2018

Author(s)

Rick Paul

Abstract

A combination of thermal neutron (TN) and cold neutron (CN) PGAA has been used to improve accuracy, precision, detection limits, and sample throughput time in PGAA. CNPGAA was used to measure element ratios relative to a comparator element, while TNPGAA was used for measurement of the comparator element. Low-Z elements with normally poor sensitivity (C, N, and S) were measured with expanded uncertainties of < 2 % in coal and fuel oil using H as comparator element. Using the combined method, measurements can be made with good counting statistics in less than a third of the time needed for TNPGAA alone, with a 20-30 improvement in detection limits.

Citation

Journal of Radioanalytical and Nuclear Chemistry

Volume

318

Issue

3

Pub Type

Journals

Download Paper

https://doi.org/10.1007/s10967-018-6212-7

Local Download

Keywords

prompt gamma-ray activation analysis, thermal neutrons, cold neutrons, radiochemistry, analytical chemistry, hydrogen, carbon, nitrogen, sulfur, low-Z elements, elemental analysis

Citation

Paul, R. (2018), Improving Accuracy, Precision, Detection Limits, and Sample Throughput in PGAA Using Cold and Thermal Neutrons and Element Ratios, Journal of Radioanalytical and Nuclear Chemistry, [online], https://doi.org/10.1007/s10967-018-6212-7, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=925901 (Accessed October 2, 2025)