การศึกษาการชะล้างของแร่ธาตุในดินตัวอย่างจากพื้นที่ป่าเขื่อนเขาแหลมในสภาวะความเป็นกรดที่แตกต่างกัน

A study of mineral leaching of soil sample from the forest area of Khao Laem Dam in different acid conditions

Name: นฤมล บัวงาม

Name: Naruemon Buangam

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

keyword: Acid rain

; Cation

; Anion

; Mineral leaching in soil

; Khao laem dam

; Wet deposition

Abstract: This research was conducted to study the effect of wet acid deposition on the forest area of Khao Laem Dam, west of Thailand. The effect was interpreted in terms of soil mineral leachate caused by the acid rain. Soil samples from the selected site were packed into PVC columns having a diameter of 0.20 m and a height of 1.15 m. The water solution at pH values of 3, 5, and 6, for each series of experimental runs, was added to the columns to simulate the deposition of acid rain for a length ofl00 days. The measured minerals in the leachate water were.The experimental results showed that the maximum cation leachate from A horizon soil, for all pH values was found to be followed by and However, the lower the pH value, the higher the leachate amount of and For B horizon soil, the maximum leachate of mineral in soil was at the pH of 5 and 6, followed by However, when the pH value was decreased to 3, the leachate of reached the highest values amongother minerals. This indicated that was easily removed at the low pH value. There was a slight evidence of fluctuation with pH .The maximum anion leachate from A horizon soil under the effect of pH 5 and 6, was followed by CC and But when the pH 3 was added to the soil columns, the highest amount of mineral leachate was. This caused by the ability of anaerobic bacteria in soil which absorbed during their respiratioil and this ability was limited when the pH valuedecreased. For B horizon soil, the maximum leachate, for all pH values was followed by and. The was readily to remove because the dissolved nitrogen in soil was generally in the form of. The maximum leachate occurred during 50-60 days of the experiment and this period would likely affected the plants growth rate.The remaining mineral contents in the post-soil for A and B horizons were analyzed. It was found that the highest leaching rate in A horizon was followed by in all pH values. This indicated its height ion mobility and solubility of. Similarly in B horizon, also showed a high ion mobility when subjected to acid condition. In case of anion, was found to have a high leachate rate, followed by and in all pH values. The same result was found in B horizon also, except pH 6 that was removed at the highest quantity. This result indicated that the low pH has greater impact on in A horizon and in B horizon. The study also showed that A1 did not exceed the critical loading of acid on sample soil. This indicated a high capability or a high buffer capacity of the Khoa Lam soil to uptake acid rain at the present time.

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Address: กรุงเทพมหานคร

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

Name: พจนีย์ ขุมมงคล

Role: อาจารย์ที่ปรึกษา

Created: 2543

Issued: 2005-09-03

Modified: 2554-06-07

วิทยานิพนธ์/Thesis

ISBN: 9746282395

CallNumber: EV216

tha

DegreeName: วิทยาศาสตรมหาบัณฑิต

Level: ปริญญาโท

Descipline: เทคโนโลยีสิ่งแวดล้อม

Grantor: มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

©copyrights มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	EV216.pdf	34.15 MB	162	2021-07-26 20:55:43
2	EV216ab.pdf	154.66 KB	54	2018-12-28 14:55:32
3	EV216ab.txt	2.89 KB	49	2018-05-13 03:19:04

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