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Her Yam Ong

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Disorders

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High Pressure Liquid Chromatography

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Environmental Monitoring

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Singapore

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Publications

TOP 3
Bee Lan Lee; Her Yam Ong; Yeong Bing Ong; Choon-Nam Ong
A sensitive liquid chromatographic method for the spectrophotometric determination of urinary trans,trans-muconic acid.
T Green; J Dow; Choon-Nam Ong; Vivian Ng; Her Yam Ong; Z X Zhuang; X F Yang; L Bloemen
Biological monitoring of kidney function among workers occupationally exposed to trichloroethylene.
David Koh; Vivian Ng; L H Chua; Yong Yang; Her Yam Ong; Sin-Eng Chia
Can salivary lead be used for biological monitoring of lead exposed individuals?

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All Publications

2005: Bee Lan Lee; Her Yam Ong; Yeong Bing Ong; Choon-Nam Ong
A sensitive liquid chromatographic method for the spectrophotometric determination of urinary trans,trans-muconic acid.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2005;818(2):277-83.
2004: T Green; J Dow; Choon-Nam Ong; Vivian Ng; Her Yam Ong; Z X Zhuang; X F Yang; L Bloemen
Biological monitoring of kidney function among workers occupationally exposed to trichloroethylene.
Occupational and environmental medicine 2004;61(4):312-7.
2003: David Koh; Vivian Ng; L H Chua; Yong Yang; Her Yam Ong; Sin-Eng Chia
Can salivary lead be used for biological monitoring of lead exposed individuals?
Occupational and environmental medicine 2003;60(9):696-8.
2001: Yaw-Chyn Lim; Kee-Seng Chia; Her Yam Ong; Vivian Ng; Y L Chew
Renal dysfunction in workers exposed to inorganic lead.
Annals of the Academy of Medicine, Singapore 2001;30(2):112-7.
1999: Vivian Ng; David Koh; G Chan; Her Yam Ong; Sin-Eng Chia; Choon-Nam Ong
Are salivary immunoglobulin A and lysozyme biomarkers of stress among nurses?
Journal of occupational and environmental medicine / American College of Occupational and Environmental Medicine 1999;41(10):920-7.
1997: X W Luo; SC Foo; Her Yam Ong
Serum DDT and DDE levels in Singapore general population.
The Science of the total environment 1997;208(1-2):97-104.
1997: David Koh; Bee Lan Lee; Her Yam Ong; Choon-Nam Ong
Colophony in topical traditional Chinese medicaments.
Contact dermatitis 1997;37(5):243.
1997: Bee Lan Lee; David Koh; Her Yam Ong; Choon-Nam Ong
High-performance liquid chromatographic determination of dehydroabietic and abietic acids in traditional Chinese medications.
Journal of chromatography. A 1997;763(1-2):221-6.
1996: Bee Lan Lee; L H Chua; Her Yam Ong; H G Yang; J Wu; Choon-Nam Ong
Determination of serum and urinary aluminum by HPLC with fluorometric detection of Al-lumogallion complex.
Clinical chemistry 1996;42(9):1405-11.
1996: Choon-Nam Ong; P W Kok; Her Yam Ong; CY Shi; Bee Lan Lee; W H Phoon; K T Tan
Biomarkers of exposure to low concentrations of benzene: a field assessment.
Occupational and environmental medicine 1996;53(5):328-33.
1996: X F Yang; Bee Lan Lee; A L New; Her Yam Ong; L Ma; Q Zhang; Choon-Nam Ong
Urinary homovanillic acid and vanillylmandelic acid in workers exposed to carbon disulfide.
American journal of industrial medicine 1996;29(3):269-74.
1995: Choon-Nam Ong; P W Kok; Bee Lan Lee; CY Shi; Her Yam Ong; Kee-Seng Chia; C S Lee; X W Luo
Evaluation of biomarkers for occupational exposure to benzene.
Occupational and environmental medicine 1995;52(8):528-33.
1995: Kee-Seng Chia; J Jeyaratnam; J Lee; C Tan; Her Yam Ong; Choon-Nam Ong; E Lee
Lead-induced nephropathy: relationship between various biological exposure indices and early markers of nephrotoxicity.
American journal of industrial medicine 1995;27(6):883-95.
1995: Kee-Seng Chia; J Jeyaratnam; C Tan; Her Yam Ong; Choon-Nam Ong; E Lee
Glomerular function of lead-exposed workers.
Toxicology letters 1995;77(1-3):319-28.
1995: David Koh; Bee Lan Lee; Her Yam Ong; Choon-Nam Ong; W K Wong; S K Ng; Chee-Leok Goh
Colophony in bindi adhesive.
Contact dermatitis 1995;32(3):186.
1995: J Wu; C Y Zhou; H Chi; M K Wong; H K Lee; Her Yam Ong; Choon-Nam Ong
Determination of serum aluminium using an ion-pair reversed-phase high-performance liquid chromatographic-fluorimetric system with lumogallion.
Journal of chromatography. B, Biomedical applications 1995;663(2):247-53.
1994: Choon-Nam Ong; Bee Lan Lee; CY Shi; Her Yam Ong; Hin-Peng Lee
Elevated levels of benzene-related compounds in the urine of cigarette smokers.
International journal of cancer. Journal international du cancer 1994;59(2):177-80.
1994: Choon-Nam Ong; CY Shi; Sin-Eng Chia; S C Chua; Her Yam Ong; Bee Lan Lee; Tze Pin Ng; K Teramoto
Biological monitoring of exposure to low concentrations of styrene.
American journal of industrial medicine 1994;25(5):719-30.
1994: Kee-Seng Chia; Antonio Mutti; C Tan; Her Yam Ong; J Jeyaratnam; Choon-Nam Ong; E Lee
Urinary N-acetyl-beta-D-glucosaminidase activity in workers exposed to inorganic lead.
Occupational and environmental medicine 1994;51(2):125-9.
1994: CY Shi; S C Chua; Bee Lan Lee; Her Yam Ong; J Jeyaratnam; Choon-Nam Ong
Kinetics of styrene urinary metabolites: a study in a low-level occupational exposure setting in Singapore.
International archives of occupational and environmental health 1994;65(5):319-23.
1993: Bee Lan Lee; Her Yam Ong; CY Shi; Choon-Nam Ong
Simultaneous determination of hydroquinone, catechol and phenol in urine using high-performance liquid chromatography with fluorimetric detection.
Journal of chromatography 1993;619(2):259-66.
1993: Bee Lan Lee; A L New; P W Kok; Her Yam Ong; CY Shi; Choon-Nam Ong
Urinary trans,trans-muconic acid determined by liquid chromatography: application in biological monitoring of benzene exposure.
Clinical chemistry 1993;39(9):1788-92.
1993: Choon-Nam Ong; David Koh; SC Foo; P W Kok; Her Yam Ong; Tar-Ching Aw
Volatile organic solvents in correction fluids: identification and potential hazards.
Bulletin of environmental contamination and toxicology 1993;50(6):787-93.
1993: Choon-Nam Ong; Sin-Eng Chia; SC Foo; Her Yam Ong; M Tsakok; P Liouw
Concentrations of heavy metals in maternal and umbilical cord blood.
Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine 1993;6(1):61-6.
1992: Bee Lan Lee; S C Chua; Her Yam Ong; Choon-Nam Ong
High-performance liquid chromatographic method for routine determination of vitamins A and E and beta-carotene in plasma.
Journal of chromatography 1992;581(1):41-7.
1992: Choon-Nam Ong; L S Liau; Her Yam Ong
Separation of globins using free zone capillary electrophoresis.
Journal of chromatography 1992;576(2):346-50.
1992: Tze Pin Ng; Y L Ng; H S Lee; Kee-Seng Chia; Her Yam Ong
A study of silica nephrotoxicity in exposed silicotic and non-silicotic workers.
British journal of industrial medicine 1992;49(1):35-7.
1991: Tze Pin Ng; HH Goh; Y L Ng; Her Yam Ong; Choon-Nam Ong; Kee-Seng Chia; S E Chia; J Jeyaratnam
Male endocrine functions in workers with moderate exposure to lead.
British journal of industrial medicine 1991;48(7):485-91.
1991: Bee Lan Lee; Her Yam Ong; Choon-Nam Ong
Determination of thiamine and its phosphate esters by gradient-elution high-performance liquid chromatography.
Journal of chromatography 1991;567(1):71-80.
1991: Choon-Nam Ong; G L Sia; Her Yam Ong; W H Phoon; K T Tan
Biological monitoring of occupational exposure to methyl ethyl ketone.
International archives of occupational and environmental health 1991;63(5):319-24.
1990: Choon-Nam Ong; L H Chua; Bee Lan Lee; Her Yam Ong; Kee-Seng Chia
Electrothermal atomic absorption spectrometric determination of cadmium and nickel in urine.
Journal of analytical toxicology 1990;14(1):29-33.
1990: Choon-Nam Ong; Y M Kong; Her Yam Ong; K Teramoto
The in vitro and in vivo effects of lead on delta-aminolevulinic acid dehydratase and pyrimidine 5'-nucleotidase.
Pharmacology & toxicology 1990;66(1):23-6.
1989: Kee-Seng Chia; Choon-Nam Ong; Her Yam Ong; G Endo
Renal tubular function of workers exposed to low levels of cadmium.
British journal of industrial medicine 1989;46(3):165-70.
1988: Choon-Nam Ong; Her Yam Ong; L H Chua
Determination of copper and zinc in serum and whole blood by ion chromatography.
Analytical biochemistry 1988;173(1):64-9.
1988: Choon-Nam Ong; Bee Lan Lee; Her Yam Ong; L E Heng
Determination of urinary phenol by acid hydrolysis and capillary gas chromatography.
Journal of analytical toxicology 1988;12(3):159-61.
1987: Choon-Nam Ong; Bee Lan Lee; Her Yam Ong; E Jaecob
Simple high-performance liquid chromatographic method for the simultaneous measurement of vanillylmandelic acid and homovanillic acid.
Journal of chromatography 1987;423():278-84.
1987: C N Ong; B L Lee; Her Yam Ong; E Jaecob
Simple and rapid liquid-chromatographic method for simultaneous measurement of vanillylmandelic acid and homovanillic acid.
Clinical chemistry 1987;33(7):1262-3.
1985: Choon-Nam Ong; B L Lee; SC Foo; Her Yam Ong; L H Chua
Specific gravity adjustment for urinary analysis of delta-aminolevulinic acid.
American Industrial Hygiene Association journal 1985;46(8):B10, B12.