การศึกษาเกลืออิออนิกในฝนกรดและผลต่อการตกสะสมของกรดในพื้นที่ชายฝั่งทะเลตะวันออกของประเทศไทย

Ionic-salt in acid rain and the effect on acid deposition in eastern coast of Thailand

Name: วิเชียร อริยภิญโญ

Name: Wichian Ariyapinyo

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

keyword: เกลือ

; ฝนกรด

Abstract: This research was conductcd to study the quantity of ionic sea-salt in the acid deposition in Chonburi province. The selected site was considered to represent a coastal area which was also ncar the industrial estate and the urban communities. The wet and dry atmospheric dcposition rncasuring facilities were sct up and the collections comprised of 62 rain samples, taken in 12 months during December 2000 to Novcinbcr 2001. For the dry deposition, the samples were collected once a month for 12 months during the samc period as thc wet collection. All the samples were analyzed using the ion chromatography to determine the values of pll, conductivity, SO:, NO,, CI-, ~2',~a', K' and NM,'.The experimental rcsults showed that the pH value was in a range of 4.4 to 6.8 and the inean value was rcported to be 5.9. Thc conductivity value was measured to be in a range of 4.0 to 57.4 micro-setnen per centimctcr. For other concentrations of anion and cation species, the sea-salt ionic composition such as sodium and chloride ions were found at the highest quantities of 61.0 and 52.6 microgram equivalent per liter, respectively. The potassiu~n ion was found at the least quantity of 12.2 microgram equivalent per liter. The study on the wet deposition of compound sulfate and nitrate in Cholburi province in a period of one year were at 0.027 and 0.024 gram equivalent per square meter per year, respectively. The result of dry analyses showed that the concentration of sodium particles were found at the highest quantity of 45.3 nanomole per cubic meter, followed by ammonia, sulfate, and chloride at the quantities of 30.9, 25.8, and 25.3 nanomole per cubic meter, respectively. The dry deposition of ammonia was found at the rate of 166.7 millimole per square meter per year, followed by hydrochloric acid, sulfur dioxide, and nitric acid at the rate of 15.8,6.7, and 2.4 millimole per square meter per year, respectively. The study on the ratio of wet deposition to dry deposition showed that the quantity of wet deposition of sulfur, nitrogen, and chloride were 3.0, 0.3, and 1.7 limes the quantity of dry deposition, rcspcctivcly . 'The inonitoring result also showed the total deposition of nitrogen for both wet and dry was higher than the total depositions of sulfur and chloride. The meteorological data on the wind direction indicated the influence of the westernly wind which flew from the area of eastern sea cost, the Gulf of Thailand. The quantity of the ionic sea-salt measured during this period indicated its high concentration. This study was in agreement with the moniloring data obtained near the sea coast in the Southern Thailand.

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Address: กรุงเทพมหานคร

Email: info.lib@mail.kmutt.ac.th

Name: พจนีย์ ขุมมงคล

Role: อาจารย์ที่ปรึกษา

Created: 2544

Issued: 2007-02-08

Modified: 2554-07-14

วิทยานิพนธ์/Thesis

ISBN: 9746289403

CallNumber: EV278

tha

DegreeName: วิทยาศาสตรมหาบัณฑิต

Level: ปริญญาโท

Descipline: เทคโนโลยีสิ่งแวดล้อม

Grantor: มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

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3	EV278ab.txt	2.93 KB	45	2021-04-01 12:38:04

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