压在透明的玻璃上c_又色又爽又黄又免费的视频软件_av无码专区亚洲av波多野结衣_国产在线每日都有更新 - www国产视频

阻燃防火材料-網(wǎng)上貿(mào)易平臺(tái) | | WAP瀏覽
服務(wù)熱線:4006555305

ASTM D5086 -用火焰原子吸收分光光度法測(cè)定大氣作用下濕沉積物中鈣,鎂,鉀和鈉含量的標(biāo)準(zhǔn)試驗(yàn)方法

放大字體  縮小字體 發(fā)布日期:2012-02-08   瀏覽次數(shù):162  分享到: 分享到騰訊微博
ASTM D5086 -用火焰原子吸收分光光度法測(cè)定大氣作用下濕沉積物中鈣,鎂,鉀和鈉含量的標(biāo)準(zhǔn)試驗(yàn)方法
ASTM D5086 Standard Test Method for Determination of Calcium, Magnesium, Potassium, and Sodium in Atmospheric Wet Deposition by Flame Atomic Absorption Spectrophotometry
ASTM D5086 -用火焰原子吸收分光光度法測(cè)定大氣作用下濕沉積物中鈣,,鉀和鈉含量的標(biāo)準(zhǔn)試驗(yàn)方法

This test method may be used for the determination of calcium, magnesium, potassium, and sodium in atmospheric wet deposition samples.
Emphasis is placed on the easily contaminated quality of atmospheric wet deposition samples due to the low concentration levels of dissolved metals commonly present.
Annex A1 represents cumulative frequency percentile concentration plots of calcium, magnesium, potassium, and sodium obtained from analyses of over five thousand wet deposition samples. These data may be used as an aid in the selection of appropriate calibration standard concentrations. (3)
1. Scope
1.1 This test method is applicable to the determination of calcium, magnesium, potassium, and sodium in atmospheric wet deposition (rain, snow, sleet, and hail) by flame atomic absorption spectrophotometry (FAAS). (1)
1.2 The concentration ranges are listed below. The range tested was confirmed using the interlaboratory collaborative test (see Table 1 for a statistical summary of the collaborative test).
 
MDL
(mg/L) (2)
Range of Method
(mg/L)
Range Tested
(mg/L)
 
 
 
 
Calcium
0.009
0.03–3.00
0.168–2.939
Magnesium
0.003
0.01–1.00
0.039–0.682
Potassium
0.003
0.01–1.00
0.029–0.499
Sodium
0.003
0.01–2.00
0.105–1.84
1.3 The method detection limit (MDL) is based on single operator precision (2) and may be higher or lower for other operators and laboratories. Many workers have found that this test method is reliable at lower levels than were tested, but the precision and bias data presented are insufficient to justify their use at lower levels.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific warning statements are given in 8.3, 8.7, 12.1.8, and Section 9.

2. Referenced Documents (purchase separately)
ASTM Standards
D883 Terminology Relating to Plastics
D1129 Terminology Relating to Water
D1193 Specification for Reagent Water
D1356 Terminology Relating to Sampling and Analysis of Atmospheres
D2777 Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
D4453 Practice for Handling of Ultra-Pure Water Samples
D4691 Practice for Measuring Elements in Water by Flame Atomic Absorption Spectrophotometry
D5012 Guide for Preparation of Materials Used for the Collection and Preservation of Atmospheric Wet Deposition
E131 Terminology Relating to Molecular Spectroscopy
E275 Practice for Describing and Measuring Performance of Ultraviolet and Visible Spectrophotometers
E694 Specification for Laboratory Glass Volumetric Apparatus
Index Terms
atmospheric wet deposition; atomic absorption; calcium; magnesium; potassium; precipitation; sodium; Atmospheric wet deposition (AWD); Beer's law; Calcium content--atmospheric analysis; Contamination--atmospheric; FAAS (flame atomic absorption spectrometry); Hail; Magnesium content--atmospheric analysis; Method detection limit (MDL); Potassium content--atmospheric analysis; Rain; Sleet; Snow; Sodium content--atmospheric analysis; Spectrophotometry--atomic absorption;

  詳情請(qǐng)咨詢
  防火資源網(wǎng)-阻燃防火測(cè)試中心
  電話:(+86)0592-5056213
  傳真:(+86)0592-5105807
  郵件:firetest@firetc.com

凡注明"防火資源網(wǎng)"的所有作品,由<防火資源網(wǎng)>整理編輯,任何組織未經(jīng)<防火資源網(wǎng)>及其擁有者授權(quán),不得復(fù)制、轉(zhuǎn)載、摘編或利用其它方式應(yīng)用于任何商業(yè)行為。

 
 
[ 防火測(cè)試中心搜索 ]  [ ]  [ 告訴好友 ]  [ 打印本文 ]  [ 關(guān)閉窗口 ]  [ 返回頂部 ]

 

 
 
推薦防火測(cè)試
推薦圖文
點(diǎn)擊排行
 
 
網(wǎng)站首頁(yè) | 廣告服務(wù) | 關(guān)于我們 | 聯(lián)系方式 | 服務(wù)協(xié)議 | 版權(quán)聲明 | 網(wǎng)站地圖 | 友情鏈接 | 網(wǎng)站留言 | 舊版本 | 閩ICP備09009213號(hào)
?2019-2021 FIRETC.COM All Rights Reserved ? 備案號(hào):閩ICP備09009213號(hào)-1在線客服 點(diǎn)擊QQ交談/留言 點(diǎn)擊QQ交談/留言