AI SearchStudy of possible health effects of styrene exposure on reinforced-plastics workers (Record no. 114796)
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| 000 -LEADER | |
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| fixed length control field | 05086cas|a2200409 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818223104.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 020125s2001 th uu|m rtt 0| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b11842829 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.EV-01-5 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Chate Jaikunya |
| 245 10 - TITLE STATEMENT | |
| Title | Study of possible health effects of styrene exposure on reinforced-plastics workers |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2001 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 81 leaves |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. EV-01-5 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science. Inter-University Program on Environmental Toxicology, Technology and Management, School of Environment, Resources and Development |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 2001 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Due to the high exposure of styrene in many occupational settings, to study the amount of styrene exposure in term of both external and internal doses in relate to the potential adverse health effect would be relevant to assessing and preventing workers from exposure to this chemical. The objective of this research is to study the levels of exposure to styrene and its possible health effects in workers in the reinforced-plastic manufacture. Biological monitoring of exposure to styrene in the workplace is an important component of this study. Firstly, the measurement of styrene in workplace was conducted and the means detected level was 18.96 æg/L. This level indicated the low level when compared with the recommended level (TWA). The external dose or exposure level was measured as the level of styrene in the breathing zone of workers, and mean level was 32.74 æg/L. The internal dose levels were determined in the blood and urine of workers and control people. In the blood samples of workers styrene was found at the means levels of 163.41 æg/L, but it was not detected in the control blood sample. The comparison of the styrene levels in the breathing zone and in the blood showed a significant conelation in the workers. The urine was used for the determination of styrene's metabolites, Mandelic acid (MA) and Phenlyglyoxylic acid (PGA). In both workers and the control groups a high variation of MA levels, both in the beginning and the end of workshift was found. The means MA level in the workers at the beginning of the workshift was 1,142 mg/g creatinine, and at the end of the workshift was 2,247 mg/g creatinine. In the control group, the means MA level at the beginning ofworkshift was 795 mg/g creatinine, and at the end of workshift was 1,348 mg/g creatinine. The results of PGA levels also showed a high variation in workers but PGA was not detected in the control group, at the beginning of workshift found 30 mg/g creatinine, and at the end ofworkshift found 43 mg/g creatinine. The results of MA and PGA levels showed no conelation with styrene levels in the breathing zone and in the blood. However, significant correlation was observed with Spearman coefficient between; MA at the beginning and at the end of the workshift (r = 0.51 ), PGA at the beginning and the end of workshift (r = 0. 77), and MA and PGA at the end ofworkshift (r = 0.40). The high variation of urinary metabolites can be explained by individual variation in the metabolic rate in the body, therefore the interpretation of urinary metabolites with the levels of styrene in breathing zone and blood required the collection of urine sample throughout the entire workshift and pathways extended to 24 hours. In addition, the assessment of possible health effects associated with styrene exposure on the several organ functions should be added in the surveillance program for workers in this manufacture. These are lung function test, the measurement of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels, and erythrocyte sedimentation rate (ESR) values. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Styrene |
| General subdivision | Health aspects |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mathuros Ruchirawat, |
| Relator term | Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Samorn Muttamara, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Panida Navasumrit, |
| Relator term | Examination committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | King Scholarship, |
| Relator term | Scholarship donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis; |
| Volume/sequential designation | no. EV-01-5 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B08196">http://203.159.5.9/ait-thesis/detail.php?q=B08196</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b11842829 |
| b | mnait |
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| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240329 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 020125 |
| First date, FD (RLIN) | m |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120652150 |
| CREATED | CREATED : 2000-08-28 |
| RECORD Id | RECORD # : i12267752 |
| LPATRON | LPATRON : 1015727 |
| LCHKIN | LCHKIN : 2003-06-09 |
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| Barcode | Barcode : 30050120652143 |
| CREATED | CREATED : 2000-08-28 |
| RECORD Id | RECORD # : i12267764 |
| LPATRON | LPATRON : 1015727 |
| LCHKIN | LCHKIN : 2003-12-14 |
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| Barcode | Barcode : 30050160077128 |
| CREATED | CREATED : 2016-05-24 |
| RECORD Id | RECORD # : i12989423 |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.EV-01-5 | 30050120652150 | 18/08/2026 | 1 | 18/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.EV-01-5 | 30050120652143 | 18/08/2026 | 2 | 18/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.EV-01-5 | 30050160077128 | 18/08/2026 | 18/08/2026 | 40-Archives |