Determination of heavy metals in soil by atomic absorption spectrometry(AAS)

Name: XuFei Group: The 3rd group

Date: Sep. 20th 20xx

Part 1 The introduction

1.1The purposes

(1)Learn how to operate the atomic absorption spectrometry;

(2)Learn how to do the pretreatment of soil samples;

(3)Get familiar with the application of atomic absorption spectrometry.

1.2The principles

Atomic Absorption Spectrometry (AAS) is a technique for measuring quantities of chemical elements present in environmental samples by measuring the absorbed radiation by the chemical element of interest. This is done by reading the spectra produced when the sample is excited by radiation. The atoms absorb ultraviolet or visible light and make transitions to higher energy levels .

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英文实验报告的格式和写法【转】

20##-10-04 06:03

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课程实验报告

专业年级  2012 级  工商管理

课程名称新视野大学英语（听说）

指导教师刘领                  

学生姓名王珩璇、钟练、姚欢、胡叶

夏一、马卫                         

学    号20122203012012、20122203012015、20122203012013、20122203012022、20122203012027、20122203012024                     

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physical lab report:Holography

Writer:

[Backgrounds]

Lights are electromagnetic waves.

A monochromatic optical wave can be mathematically expressed as a wave equation:

where A is the amplitude and carries phase information. The way we view any given object is to observe the brightness (amplitude), color (wavelength), and shape/distance (phase).

A conventional photograph records the focused image of an object on a photographic film or plate. A hologram is a photographic recording of an optical interference pattern. The amplitude and phase of light coming from the object are stored in the hologram. The phase information enables us to reconstruct the original wavefront and hence obtain a three-dimensional image in space.

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Qualitative determination of the elements of organic compounds

Part1 The purposes

1 Learn the principles of the analysis of elements.

1 Master the inspection method of common elements.

Part2 The principles

2.1 The inspection of hydrogen and carbon

Ba(OH)₂+CO₂→BaCO₃↓+H₂O   

Observe the test tube wall with or without water drop.

2.2 The inspection of sulfur and nitrogen

3NaCNS+FeCl₃→Fe(CNS)₃ (sanguineous)+3NaCl

2.2.1 The inspection of nitrogen

FeSO₄+6NaCN→Na₄[Fe(CN)₆]+Na₂SO₄

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  实验报告

课程名称：   大学英语                 

实验项目：   基础英语口语听力训练      

专业班别：             

姓    名：                            

学    号：                             

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Lab Report of Medical Functional Experimentation

                                                       Date： June 13, 2014 

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