> мڷ
Teledyne Leeman Labs
ǰ ICP-OES
[ICP] ICP-OES ̿ Դ (EPA 200.7)

Drinking Water Analysis Following U.S. EPA Method 200.7 Using the Teledyne Leeman Labs Prodigy7 ICP-OES


[Introduction]


ڷ Դ 迡 EPA methods Ͽ Teledyne Leeman Labs Prodigy7 ICP-OES ռ ҰѴ. ̱ (Safe Drinking Water Act) Է Ǿ ִ. 켱 ̱ EPA Դ National Primary Drinking Water Regulation MCLs ִ ̴. ׸ Ư(, , )κ National Secondary Drinking Water Regulations Ѵ. ° ׸ the Unregulated Contaminant Monitoring Rule 3 (UCMR-3) ʴ ͸ Դ ǽɵǴ ̴.

 

Table I : MCL and MRL Concentrations for Contaminants Monitored Under the Safe Drinking Water Act

National Secondary Drinking Water Regulations

Unregulated Contaminant Monitoring Rule 3

Contaminant

MCL (mg/L)

Contaminant

MCL (mg/L)

Contaminant

MCL (mg/L)

As

0.01

Ag

0.1

Co

0.001

Ba

2.0

Al

0.05 - 0.2

Cr (total)

0.0002

Be

0.004

Cu

1

Mo

0.001

Cd

0.005

Fe

0.3

Sr

0.0003

Cr (total)

0.1

Mn

0.05

V

0.0002

Cu

1.3

SO4

250

 

 

Hg

0.002

Zn

5

 

 

Pb

0.015

 

 

 

 

Sb

0.006

 

 

 

 

Se

0.05

 

 

 

 

Tl

0.002

 

 

 

 

U

0.03

 

 

 

 


 


[Experimental]

 

*Instrument


м Teledyne Leeman Labs Prodigy7 ICP-OES(CETAC ASX-520 ڵ ÷ Ա ) ̿Ͽ dual view 带 ̿Ͽ. м Table II III õǾ.

 

Table II : Sample Introduction Setup

Parameter

Setting

Nebulizer

Glass Conikal for Low Dissolved Solids

Spray Chamber

Glass Cyclonic with no Center Knockout Tube

Torch Injector Diameter

2.5 mm

Sample Uptake Tubing

0.76 mm

Sample Drain Tubing

1.14 mm

 

Table III : Instrument Operating Conditions

Parameter

Setting

Coolant Gas

14 L/min

Auxiliary Gas

0.5 L/min

Nebulizer Gas

40 psi

RF Power

1.2 kW

Pump Rate

1.4 mL/min

Autosampler Rinse Time

60 s

Integration Time

Axial

30 s

Radial

15 s

 

Calibration ǥ Ƽ Ź ַ ̿Ͽ 0, 1 mg/L, 10 mg/L Ѵ.


[Results and Discussion]

 

EPA method 200.7 ÷ м ռ IDL( Ѱ) Ͽ MDL( Ѱ) ϰ, ȭ Ų upper linear dynamic range ؾ Ѵ. MDL calibration blank 7ȸ ݺ мϿ ´.

 

Table IV : Detection Limits and Linear Dynamic Range

 

Element

Wavelength (nm)

MDL (ug/L)

LDR Upper Limit (mg/L)

Element

Wavelength (nm)

MDL (ug/L)

LDR Upper Limit (mg/L)

Ag

328.068 r

1.6

100

Mn

257.610 r

0.75

150

Al

308.215 r

21.6

1100

Mo

202.030

2.1

200

As

193.759

6.2

200

Na

588.995 r

25.5

200

B

249.677 r

2.6

1000

Ni

231.604

10.0

100

Ba

493.409 r

8.6

10

P

214.914

17.4

3000

Be

313.042 r

0.07

5

Pb

220.353

2.4

600

Ca

315.887 r

16.8

1000

Sb

206.833

4.3

400

Cd

226.502

0.07

60

Se

196.090

4.7

200

Co

228.615

0.47

100

Si

251.611 r

3.5

1300

Cr

205.552

0.19

100

Sn

189.991

1.3

200

Cu

324.754

0.29

100

Sr

421.552 r

0.47

20

Fe

259.940 r

2.4

300

Ti

334.941 r

0.18

300

K

766.491 r

55.2

1000

Tl

190.864

2.21

300

Li

670.791 r

1.1

80

V

292.401 r

0.79

200

Mg

279.078 r

4.2

1400

Zn

213.856

0.32

50

 

 

*Interfering Element Correction (IEC)

 

м Ȯ м Ʈ 縦 Ȯؾ Ѵ. ̸ ̱ Ͽ Interfering Element Correction(IEC) Ұ Ǿ Ѵ. Table V Ÿ´.

 

Table V : IEC Factors for Significant Interferences

Element

Wavelength (nm)

Interference Solution

IEC Factor

Ag

328.068

V

-0.0031

Ag

328.068

Zr

0.0073

Al

308.215

V

0.3856

Al

308.215

Zr

-0.0072

B

249.677

Zr

-0.0033

Ca

315.887

Zr

-0.0121

P

214.914

Cu

0.0189

P

214.914

Sn

-0.0215

Sb

206.833

Cr

0.0305

Sb

206.833

V

-0.0037

Se

196.090

Fe

-0.0054

Tl

190.856

V

0.0027

V

292.401

Cr

-0.0029

Zn

213.856

Ni

0.0093

 

 

*Long-Term Stability

 

10 ð ÷Ḧ мϸ鼭 QC ׽Ʈ Ͽ ȮѴ. ׷ Figure 2 Ÿ´.

 app2.jpg

*Quality Control Samples

 

Ȯ е ϱ ؼ QC ׽Ʈ NIST 1640a ERA CRM ̿Ͽ. CRM Ե Table VI Ÿ´.


Table VI : Results For Certified Reference Materials

 

Element

NIST 1640a

ERA

Measured Conc.(g/L)

Certified Conc.(g/L)

%Rec

Measured Conc.(g/L)

Certified Conc.(g/L)

%Rec

Ag

7.88

8.081

97.5

297

308

96.5

Al

43.71

53

82.5

708

690

102.6

As

6.94

8.075

85.9

471

491

95.9

B

294.0

303.1

97.0

1615

1700

95.0

Ba

153.1

151.8

100.8

326

339

96.3

Be

2.89

3.026

95.4

311

329

94.6

Ca

5522.4

N/A

---

N/A

---

Cd

3.76

3.992

94.2

487

498

97.8

Co

20.82

20.24

102.9

287

277

103.5

Cr

37.76

40.54

93.1

293

316

92.6

Cu

84.75

85.75

98.8

404

409

98.8

Fe

34.98

36.8

95.1

624

660

94.6

K

669.0

N/A

---

N/A

---

Li

2.43

N/A

---

N/A

---

Mg

991.3

N/A

---

N/A

---

Mn

40.49

40.39

100.2

1986

1980

100.3

Mo

43.28

45.6

94.9

182

189

96.5

Na

3097.5

N/A

---

N/A

---

Ni

26.41

25.32

104.3

2396

2420

99.0

P

-12.65

N/A

---

N/A

---

Pb

10.23

12.101

84.6

1430

1460

98.0

Sb

3.57

5.105

69.9

217

246

88.1

Se

20.40

20.13

101.3

480

486

98.7

Si

4907.1

N/A

---

129

N/A

---

Sn

-0.98

N/A

---

N/A

---

Sr

113.3

126.03

89.9

165

178

92.5

Ti

-27.29

N/A

---

N/A

---

Tl

---

---

719

748

96.1

V

20.08

15.05

133.4

279

287

97.2

Zn

53.23

55.64

95.7

1393

1540

90.5

 

÷ Ͽ. ÷ Ƽ ǥ ũ ۾ ߰ Table VII Table VIII Ÿ´.

 

Table VII : Results for the Analysis of Spiked River Water Sample

 

Element

 

Spike Conc.(mg/L)

River Water

Unspiked Conc.(mg/L)

Spiked Conc.(mg/L)

%Rec

Ag

1.0

0.890

89.0

Al

1.0

0.071

0.943

87.2

As

1.0

1.017

102.0

B

1.0

0.010

0.975

96.5

Ba

1.0

0.027

0.965

93.8

Be

1.0

1.002

100.2

Cd

1.0

1.006

100.6

Co

1.0

0.0004

0.963

96.3

Cr

1.0

0.990

99.0

Cu

1.0

0.002

0.971

96.9

Fe

1.0

0.606

1.533

92.6

K

10.0

1.323

10.99

96.7

Li

1.0

0.014

1.061

104.7

Mg

1.0

1.100

1.983

88.3

Mn

1.0

0.086

1.041

95.6

Mo

1.0

0.997

99.7

Ni

1.0

0.958

95.6

P

1.0

0.926

91.6

Pb

1.0

0.965

97.0

Sb

1.0

0.990

100.9

Se

1.0

1.033

103.6

Si

1.0

3.368

4.355

98.7

Sn

0.5

0.562

112.4

Sr

1.0

0.053

1.104

105.1

Ti

1.0

0.006

1.045

103.9

Tl

1.0

0.959

96.2

V

1.0

0.001

1.022

102.0

Zn

1.0

0.011

1.042

103.1

 

Table VIII : Results for the Analysis of Spiked Bog Water Sample

Element

 

Spike Conc.(mg/L)

 

Bog Water

 

Unspiked Conc.(mg/L)

Spiked Conc.(mg/L)

%Rec

Ag

1.0

0.952

95.1

Al

2.5

4.077

6.411

93.4

As

1.0

0.225

1.315

109.0

B

1.0

0.017

1.052

103.5

Ba

1.0

0.102

1.105

100.3

Be

1.0

1.064

106.4

Cd

1.0

0.003

1.063

106.1

Co

1.0

0.004

1.016

101.2

Cr

1.0

0.108

1.143

103.5

Cu

1.0

1.018

2.008

99.0

Fe

2.5

7.211

9.283

82.9

K

10.0

1.921

12.24

103.2

Li

1.0

0.016

1.164

114.8

Mg

1.0

3.011

3.898

88.7

Mn

1.0

0.176

1.184

100.9

Mo

1.0

1.040

104.4

Ni

1.0

0.023

1.027

100.5

P

1.0

0.305

1.279

97.4

Pb

1.0

0.591

1.586

99.5

Sb

1.0

1.064

108.1

Se

1.0

1.109

114.9

Si

0.5

1.204

1.684

95.9

Sn

0.5

0.547

109.2

Sr

1.0

0.081

1.215

113.4

Ti

1.0

0.031

1.132

110.1

Tl

1.0

1.014

101.7

V

1.0

0.029

1.107

107.8

Zn

1.0

0.592

1.666

107.4

 

[Conclusions]

Դ US EPA method 200.7 Prodigy 7 ICP-OES ̿Ͽ м , CRM ̿Ͽ Ȯ м ׽ƮϿ, ÷ ÷Ḧ Ϻϰ м Ȯ Ͽ. Teledyne Leeman Labs Prodigy7 Ȯ м, ȣȯ, Ư¡̰ CETAC autosampler ̿Ͽ м ȯ Ѵ.

 

 

 

 

 

ǰ Teledyne Leeman Labs Prodigy 7 ICP-OES
ڷṮ