O determination in copper samples

閱讀：5741 發(fā)布時間：2015-05-15

Suitable analyzers
n ON 900
n OH 900
n ONH 2000
Used accessories
n Graphite crucibles (90190)
n Suitable calibration material (NIST or other)
Settings
n Comparator level: 20 mV
n Minimum time: 15 sec
n Maximum time: 1:30 min
n Post waiting: 10 sec
n Base line deviation: 200 mV;
Step: 16 mV; Time: 10 sec
n Mode: continuous
n Outgas
Time: 45 sec
Power: 3.5 kW
n Time
Purge: 20 sec
Stability: 45 sec
n Integration delay
IR cell: 2 sec
TC cell: 10 sec
n Analyse (1)
Time: 75 sec
Power (1): 3.0 kW
Power (2): 3.0 kW
Sample preparation
Make sure that the surface of the copper is free from
contaminations; otherwise clean the sample with acetone
p.a. and let dry at atmosphere. In case of very low oxygen
concentrations (< 5 ppm) rinse the sample in nitric acid
(HNO3) first, than water, last with acetone. Let this sample
dry at atmosphere and analyze immediay.
Procedure
n Prepare ELTRA analyzer (exchange anhydrone, sodium
hydroxide, copper oxide or Schuetze reagent when
necessary), clean furnace, sample drop mechanism,
electrode tip
n Run three blanks with empty crucibles
n Calibrate the analyzer with suitable calibration
material (NIST or other)
(1) Place empty crucible (90190) on the electrode tip,
close furnace (F2 Button)
(2) Weigh calibration material (usually pins)
(3) Place calibration material in the sample drop
mechanism and start analysis (F5 Button)
Repeat steps (1) – (3) at least three times;
Mark the results and use the calibration function in the
software.

提供商	弗爾德（上海）儀器設(shè)備有限公司	下載次數(shù)	271次
資料大小	343KB	資料類型	PDF 文件免費(fèi)下載該資料
資料圖片	--	瀏覽次數(shù)	5741次

會員登錄

請輸入賬號

請輸入密碼

請輸驗(yàn)證碼

收藏該商鋪

查看我的收藏夾設(shè)置標(biāo)簽

標(biāo)簽：: 保存成功
(空格分隔,最多3個,單個標(biāo)簽最多10個字符)

常用：

提示

您的留言已提交成功！我們將在第一時間回復(fù)您~

以上信息由企業(yè)自行提供，信息內(nèi)容的真實(shí)性、準(zhǔn)確性和合法性由相關(guān)企業(yè)負(fù)責(zé)，化工儀器網(wǎng)對此不承擔(dān)任何保證責(zé)任。溫馨提示：為規(guī)避購買風(fēng)險，建議您在購買產(chǎn)品前務(wù)必確認(rèn)供應(yīng)商資質(zhì)及產(chǎn)品質(zhì)量。

O determination in copper samples

產(chǎn)品展示

會員登錄

收藏該商鋪

提示