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原子发射光谱小结 PowerPoint PPT Presentation


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原子发射光谱小结. 当处于气态的基态原子获得能量后使外层电子激发至高能态(激发态),当它从激发态回到较低的能态或基态时,若以光量子的形式放出能量,就得到原子发射光谱。因此发射光谱分析包括的过程可分为:. 试样蒸发、激发产生辐射;→ 激发光源 色散分光形成光谱; → 分光系统 检测记录光谱; → 检测器 根据光谱进行定性或定量分析。.

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原子发射光谱小结

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1.

2.

3.

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1.

2.

3.

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.

:

1. 4000-7000K3800K

2.

3. 20,000-40,000 K

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4.

5.ICP

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.

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1.

1

,

2

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2.

1

d

K= 01 2)

2

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3R

Rmax = 2w/

4

ii

K= 2dsini

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  • 20

2.

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.

2-3

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1.

2.

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30%~300%

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.

LomakinIC

a

bb=1b<1

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lgC

lgR = lgI/I0 = blgC + lga

S = lgI/ I0 =blgC + lga

S

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S

logC

logR

logC

.

SlgRlgCSlgR

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  • A.

  • B.

  • C.

  • D.

  • 2.

  • A. B. C. D.

  • 3.

  • A. B. C. D.

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4.

A.

B. 5

C.

D.

5. -

A. lgI=blgc+lga B. lgA=blgc+lga

C. lgA=blga+lgc D. lgI=blga+lgc

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6.

A.

B.

C. 30 nm

D.

7.

A.

B.

C.

D.

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8.

A.

B.

C.

D.

9.

10. R

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12.

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13. 50 mm 600 /mm 310.030 nm 310.066 nm

R=nN=160050=30 000

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14. 40 -15 300 nmmm

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15. SiO2FeFe 302.6 nmSi 302.00 nm

=1.00Fe

S=lgR =1.00

R 1.70 2.63 3.23 4.26

R= aCb (b=1)

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R-c%

R

0.002

0

cFe%

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Thank You !


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