03121nam a2200409 4500 20260818112736.0 110398 th eng .b10073267 AIT Thesis no.996 Khan, Hasinuzzaman An evaluation of heavy metals concentration in particulates in Bangkok Bangkok : Asian Institute of Technology, 1976 80 p. Thesis ; no. 996 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand. Thesis (M.Eng.) - Asian Institute of Technology, 1976 Experiments were conducted during a four month period (May-August 1976) in order to determine the heavy metals concentration in the air adjacent to Bangkok Streets. Dust-fall measurements were carried out during (May-June 1976) at Bangkok Meteorological Stations (Bangna and Sukhumvit Road). Surface dust samples were collected at the edge of the road and at 5.0 m, 10.0 m from the roadside during a four months period (May-August 1976) in order to critically identify the source of heavy metals in air. A total of 190 air samples and 270 soil samples were collected for analysis. The effect of various parameters on air and surface dust levels were determined and discussed in detail in this report. Ambient air heavy metal levels are comparable to those measured elsewhere. Street heavy metal levels are related to traffic volume. Surface dust heavy metal concentration decreases as the distance from the road increases which gives an indication that automobiles are the source of heavy metals. High correlations exist between different pairs of heavy metals and are comparable to the study made by RICKY R.J. (1970). The high correlation coefficients between the heavy metals suggest that the source of pollution is the same. Pollution Bangkok Nguyen Cong Thanh, Chairperson Samorn Muttamara, Examination Committee Pescod, M.B., Examination Committee Royal Government of the Netherlands, Scholarship Donor Asian Institute of Technology. Thesis ; no. 996 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B23867 .b10073267 mnait x 260402 2 951012 m a x 3 mnait mnait mnarc 20 40 Barcode : 3005000303978x CREATED : 1994-05-16 RECORD # : i10072226 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003039772 CREATED : 1994-05-16 RECORD # : i10072238 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160089404 CREATED : 2016-04-28 RECORD # : i12962685 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 41014 41014 0 0 0 0 MAIN MAIN mnait 2026-08-18 10.00 0 AIT Thesis no.996 3005000303978x 2026-08-18 11:27:36 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 10.00 0 AIT Thesis no.996 30050003039772 2026-08-18 11:27:36 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.996 30050160089404 2026-08-18 11:27:36 2026-08-18 40