Atomic absorption spectrometry
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原子吸收光谱分析 ATOMIC ABSORPTION SPECTROMETRY 侯书恩 PowerPoint PPT Presentation


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原子吸收光谱分析 ATOMIC ABSORPTION SPECTROMETRY 侯书恩. 一、概述 二、原子吸收分析基本理论 三、原子吸收光谱仪的组成部分 四、原子吸收实验技术 五、原子吸收分析技术的应用 六、最新原子吸收光谱分析仪器简介. 1 、什么是原子吸收分析? 通过测量样品中 气态自由原子 对被测元素的 特征波长 的吸收来 测量样品中该元素含量 的一种分析方法。 2 、 原子吸收分析主要特点 分析的选择性强(干扰少); 灵敏度高; 精密度好; 应用范围广. 一、概述. 原子吸收光谱分析选择性强 与分光光度法比较 与电化学方法比较

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原子吸收光谱分析 ATOMIC ABSORPTION SPECTROMETRY 侯书恩

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Atomic absorption spectrometry

ATOMIC ABSORPTION SPECTROMETRY


Atomic absorption spectrometry


Atomic absorption spectrometry

1

2


Atomic absorption spectrometry

g/mLng/mL

10101014g

130.X

15

20300L5100L0.0530mg


Atomic absorption spectrometry

70

3


Atomic absorption spectrometry

4

1953 A.Walsh

1958 L vov

1960

1967 Massmann

1970Perkin-Elmer

1976HitachiZeeman

1978 L vov

2080Zeeman

2090


Atomic absorption spectrometry

1

E = h hPlanck

= c/ c

2

1/(2)

105nm

A 0 (T/M)1/2 M

103nm


Atomic absorption spectrometry

Zeeman)

Zeeman

0.4668 B

P

P

Zeeman

Zeeman

Zeeman


Atomic absorption spectrometry

3

I = I0 e-Kl

A = log(I0/I)

A =0.4343Kl

l

A =0.4343KlN0

A = K C


Atomic absorption spectrometry

18080


Atomic absorption spectrometry

18080


Atomic absorption spectrometry

  • 1


Atomic absorption spectrometry

  • 2


Atomic absorption spectrometry


Atomic absorption spectrometry


Atomic absorption spectrometry

()

(AlAsAuBaBeCaCoCrCuFeGeLiMnMoNiPdPtRhSbSiSnSr)

300050l10l

(AgBiCdInKMgNaPbSeZn)

260050l10l

(BaCaCoCrCuMnMoNiPdPtRhSrTiV)


Atomic absorption spectrometry

    • APA1


Atomic absorption spectrometry

  • 010


Atomic absorption spectrometry


Atomic absorption spectrometry

010s

< 3000

0.50.9 mm

< 0.2 mm

0.53.0kg/cm2

2 L/min.()

100 mL/min.

< 100W


Atomic absorption spectrometry

  • APA1

    • RSD3


Atomic absorption spectrometry

  • 3

  • D2

      • 1A

      • 200nm350nm

    • D21A


Atomic absorption spectrometry

  • Zeeman


Atomic absorption spectrometry

    • 1.5 A


Atomic absorption spectrometry

  • 4


Atomic absorption spectrometry

1

2

3

4


Atomic absorption spectrometry

  • 1

10.0044A

S = (C0.0044)/A

X0.00Xmg/L g/mLng/mL

3

DL = (C 3 )/A

10101014g


Atomic absorption spectrometry

  • 2


Atomic absorption spectrometry

3

/)

( ) Cu


Atomic absorption spectrometry

ANALYTICAL CONDITIONS

ELEMENT Cu

LAMP CURRENT 7.5 mA

WAVELENGTH 324.8 nm

SLIT 1.3 nm

BUENER STANDARD TYPE

BURNER HEIGHT 7.5

OXIDANT AIR

1.60 kg/cm2

(9.4 L/min)

FUEL C2H2

0.30 kg/cm2

(2.3 L/min)

H.C.LAMP 80.5

* LAMP CURRENT -

* RANGE 0.0 -20.0 mA

*

1


Atomic absorption spectrometry

ANALYTICAL CONDITIONS

ELEMENT Cu

LAMP CURRENT 7.5 mA

WAVELENGTH 324.8 nm

SLIT 1.3 nm

CUVETTE TUBE

CARRIER GAS 200 mL/min

SAMPLE VOLUME 10 l

H.C.LAMP91.3

* LAMP CURRENT -

* RANGE 0.0 -20.0 mA

*

2


Atomic absorption spectrometry

LAMP CURRENT WAVELENGTH

SLIT

BURNER

BURNER HEIGHT

OXIDANT

FUEL

CUVETTE

CARRIER GAS

SAMPLE VOLUME

RANGE 0.0 -- 20.0 mA

RANGR 190.0 --900.0 nm

1. 0.2nm 2. 0.4nm 3. 1.3nm 4. 2.6nm

1. STANDARD TYPE 2. HIGH TEMP. TYPE 3. OTHER

RANGEE 0.0 --20.0

1. Air 2. N2O 3. Ar

RANGE 0.00 -- 2.00 kg/cm2

1. C2H2 2. H2

RANGE 0.00 -- 1.00 kg/cm2

1. CUP 2. TUBE 3. OTHER

RANGE 0 --1000 ml/min

RANGE 0 --100 l

3


Atomic absorption spectrometry

  • 512.5mA

  • ()15


Atomic absorption spectrometry

  • (CdZn)

  • (S/N)

  • (ANALYTICAL CONDITIONS)

  • 00120


Atomic absorption spectrometry

  • 0.20.41.32.6nm

  • (FeNiCo) ()


Atomic absorption spectrometry

(WAVELENGTH)

1.

(ArNe)

Cu200400nm216.5222.6244.2249.2324.8327.4nm324.8nmFeCoNi

() Pb217.0nm

283.3nm(217.0nm1/2)(217.0nm1/5)283.3nm


Atomic absorption spectrometry

Ag

*321.8

338.3

1.0

0.07

Al

*309.3

237.3

237.6

256.8

257.5

308.2

394.4

396.2

1.0

0.15

0.12

0.09

0.13

0.85

0.13

0.49

As

*193.7

197.2

1.0

0.71

Au

*242.8

267.6

274.8

312.3

1.0

0.17

0.0006

0.0005


Atomic absorption spectrometry


Atomic absorption spectrometry

/

(0.5100)

2300

1. 35

2.

(AlBBa BeSiTiWV)3. CaCrMo4.AsSe

N2O/

(0.450)

2955

1./2.3./a.b.4.

/

2045

1.230nm

/2.CuPbZnSnSn

/

1600

1./200nmAsSe2.

180-70


Atomic absorption spectrometry

    • 80120

    • 30016001040

    • 12002800310

    • 3

()

(CdPb)160

(CrNi)80


Atomic absorption spectrometry

.

()

.

. ()


Atomic absorption spectrometry

  • 4


Atomic absorption spectrometry

1

2

3

4

5

6

7

8


Atomic absorption spectrometry

  • 1


Atomic absorption spectrometry

  • 2


Atomic absorption spectrometry

  • 3

      • HF/H2SO4

      • H3PO4/H2SO4/HClO4

      • HCl/HNO3/HF


Atomic absorption spectrometry

  • 4

      • H3PO4/H2SO4/HClO4

      • HCl/HNO3/HF


Atomic absorption spectrometry

  • 5

    • NaKCaMgFeCuZnCrCoNiSnSi

      • TritonX-100


Atomic absorption spectrometry


Z5000

Z5000


Z9000

Z9000


P e aanalyst tm 800

P-E AAnalystTM 800


Atomic absorption spectrometry

UNICAM SOLAAR M


Varian 220fs

VARIAN 220FS


Atomic absorption spectrometry

GGX


Atomic absorption spectrometry

AFS


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