2025年科学实验结果英文撰写指南.pdf

  1. 1、本文档共5页,可阅读全部内容。
  2. 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
  3. 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载
  4. 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
查看更多

determinationofheavymetalsinsoilbyataomicabsorption

Spectrometry(aas)

marme:XuUEeIthe3ragroup

各DO加,

Part1theintroduction

1.。1thePurposes

(1)LearnhowtooperatetheatomicabsorptionSpectrometry

(2)learnhowtodothePretreatmentofsoilsamples:

(3)getfamiliarwiththeapplicationofatomicabsorptionspectrometry.

12thePrinciples

atomicabsorptionspectrometry(aas)jisatechniqueformeasuring

quantitiesofchemicalelementsPresentinenvironmentalsamplesby

measuringtheabsorbedradiationbythechemicalelementofinterest,this

isdonebyreadingthespectraProducedwhenthesampleisexcitedby

radiation,theatomsabsorbultravioletorVisible1ightandmake

transitionstohigherenergylevels.

theconcenrrationiscalculatedbasedonthebeer-lambertlaw-

absorbanceisdirect1yproportionaltotheconcentrationoftheanalyte

absorbedfortheexistingsetofconditions,theconcentrationisusually

determinedfromacalibrationcurve,obtainedusingstandardsofknown

concentration-。calibrationcurvemethod:Preparestandardsolutionsofat

leastthreedifferentconcentrations,measuretheabsorbanceofthese

standardsolutions,andprepare鱼calibrationcurvefromthevalues

obtained,thenmeasuretheabsorbanceofthetestsolutionadjustedin

concentrationto和measurablerange,andceterrtinetheconcentraticnOf上he

elementfromthecalibrationcurve-

Part2thematerialsandapparatus

Part3theprocedure

3,1operatingprocedureforaas

(2)installrequiredhollowcathodelamp、selectititbeforeturning

tothePowerandhollowcathodelamp,thenselectappropriate1ampcurrent

andPreheatfor30min,

(3)makesureelectricalmetertoPointtozeroandthenturnonhigh-

voltagePower.

(4)selectappropriateslitwidth

(5)rotatemonochromatorandselectrequiredwavelength。:ifthePower

文档评论(0)

28974635 + 关注
实名认证
内容提供者

相近型号说明书可通用,具体看说明书包括型号

版权声明书
用户编号:5012033012000042

1亿VIP精品文档

相关文档