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Title: Assessment of radionuclide contents in food in Hong Kong

Abstract

Baseline values of concentrations of the natural radionuclides ({sup 238}U, {sup 226}Ra, {sup 228}Ra/{sup 232}Th, {sup 210}Pb) and artificial radionuclides ({sup 137}Cs, {sup 60}Co) in food and drinks (tap water, milk, and water-based drinks) were determined by gamma spectroscopy. All food and drinks were found to contain detectable {sup 40}K contents: 0.1 to 160 Bq Kg{sup {minus}1} for food and 0.006 to 61 Bq L{sup {minus}1} for drinks. Most of the other natural radionuclides in solid food were found to have contents below the minimum detectable activities (MDA). More samples in the leafy vegetable, tomato, carrot and potato categories contained detectable amounts of {sup 228}Ra than the meat, cereal, and fish categories, with concentrations up to 1.2 Bq kg{sup {minus}1} for the former categories and 0.35 Bq kg{sup {minus}1} for the latter categories. The {sup 238}U and {sup 226}Ra radionuclides were detectable in most of the water-based drink samples, and the {sup 228}Ra and {sup 210}Pb radionuclides were detectable in fewer water-based drink samples. The {sup 137}Cs contents in solid food were detectable in most of the solid food samples (reaching 0.59 Bq kg{sup {minus}1}), but in drinks the {sup 137}Cs contents were very low and normally lower than themore » MDA values. Nearly all the {sup 60}Co contents in food and drinks were below the MDA values and their contents were below those of {sup 137}Cs.« less

Authors:
;
Publication Date:
Research Org.:
City Univ. of Hong Kong, Kowloon (HK)
OSTI Identifier:
20001057
Resource Type:
Journal Article
Resource Relation:
Journal Name: Health Physics; Journal Volume: 77; Journal Issue: 6; Other Information: PBD: Dec 1999
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 56 BIOLOGY AND MEDICINE, APPLIED STUDIES; HONG KONG; URANIUM 238; RADIUM 226; RADIUM 228; THORIUM 232; LEAD 210; POTASSIUM 40; CESIUM 137; SOILS; DRINKING WATER; CONTAMINATION; FOOD CHAINS; RADIATION MONITORING; RADIOECOLOGICAL CONCENTRATION

Citation Formats

Yu, K.N., and Mao, S.Y. Assessment of radionuclide contents in food in Hong Kong. United States: N. p., 1999. Web. doi:10.1097/00004032-199912000-00013.
Yu, K.N., & Mao, S.Y. Assessment of radionuclide contents in food in Hong Kong. United States. doi:10.1097/00004032-199912000-00013.
Yu, K.N., and Mao, S.Y. Wed . "Assessment of radionuclide contents in food in Hong Kong". United States. doi:10.1097/00004032-199912000-00013.
@article{osti_20001057,
title = {Assessment of radionuclide contents in food in Hong Kong},
author = {Yu, K.N. and Mao, S.Y.},
abstractNote = {Baseline values of concentrations of the natural radionuclides ({sup 238}U, {sup 226}Ra, {sup 228}Ra/{sup 232}Th, {sup 210}Pb) and artificial radionuclides ({sup 137}Cs, {sup 60}Co) in food and drinks (tap water, milk, and water-based drinks) were determined by gamma spectroscopy. All food and drinks were found to contain detectable {sup 40}K contents: 0.1 to 160 Bq Kg{sup {minus}1} for food and 0.006 to 61 Bq L{sup {minus}1} for drinks. Most of the other natural radionuclides in solid food were found to have contents below the minimum detectable activities (MDA). More samples in the leafy vegetable, tomato, carrot and potato categories contained detectable amounts of {sup 228}Ra than the meat, cereal, and fish categories, with concentrations up to 1.2 Bq kg{sup {minus}1} for the former categories and 0.35 Bq kg{sup {minus}1} for the latter categories. The {sup 238}U and {sup 226}Ra radionuclides were detectable in most of the water-based drink samples, and the {sup 228}Ra and {sup 210}Pb radionuclides were detectable in fewer water-based drink samples. The {sup 137}Cs contents in solid food were detectable in most of the solid food samples (reaching 0.59 Bq kg{sup {minus}1}), but in drinks the {sup 137}Cs contents were very low and normally lower than the MDA values. Nearly all the {sup 60}Co contents in food and drinks were below the MDA values and their contents were below those of {sup 137}Cs.},
doi = {10.1097/00004032-199912000-00013},
journal = {Health Physics},
number = 6,
volume = 77,
place = {United States},
year = {Wed Dec 01 00:00:00 EST 1999},
month = {Wed Dec 01 00:00:00 EST 1999}
}