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APPLICATION NOTE

IARM 311A – Titanium, CP Grade 2

SUMMARY

The application note summarizes the digestion of IARM 311A, a Grade 2, Titanium certified reference material using ColdBlock Digestion Pro Series Technology..

Instrument:

Equipment: ColdBlock CBM sample digester, chiller, HF compatible liners, ICP-OES

Published:September 2024
Digestion Time:10 Minutes
Acid Used:Aqua Regia & HF
Average ColdBlock Recovery vs. CRM:

  • 98% Aluminum

  • 99% Chromium

  • 101% Titanium

METHODOLOGY

  1. Chiller temperature was set to -5°C
  2. 0.2g of each sample was weighed and placed into a ColdBlock Digestion vessel
  3. 12 mL Aqua Regia + 1mL HF was added
  4. Sample was digested at 90% power for 10 minutes
  5. Samples were cooled and bulked to 50mL using 2% HNO3 v/v

DISCUSSION

  • Samples were digested in triplicate
  • After 10-minute digestion, the samples are clear and colorless
  • As a safer alternative to HF, you can add solid NH4F (ammonium fluoride)

IARM 311A after bulk up

IARM 311A CR Grade 2 Titanium is a certified reference material sourced from LGC ARMI. LGC ARMI, Analytical Reference Material International, Manchester, New Hampshire, USA (September 2009)

Results

IARM 311A – CP, Grade 2 Titanium

Method:

0.2g

12mL Aqua Regia + 1mL HF, digested at 90% power for 10 minutes

Analyte

Certified Value (ppm)

95%

Confidence Limits

Sample A

Sample B

Sample C

Average

Stdev

% RSD

% Recovery

Al

3200

100

3140

3200

3020

3120

74.83

1.8

98%

Cr

130

10

130

131

125

128.7

6.62

2.0

99%

Cu

13

5

14

12

13

13

0.82

6.3

100%

Fe

600

20

590

550

550

563

18.86

3.3

94%

Mn

13

2

13

13

13

13.1

0.29

2.2

101%

Mo

12

2

13

13

10

12

1.45

12.1

100%

Ni

140

10

133

133

132

133

0.47

0.4

95%

Si

50

10

46

42

54

47

4.99

11

95%

Sn

20

4

19

19

18

19

0.47

2.5

93%

Ti

994000

N/A

998700

1011500

1002100

1004100

5413

0.5

101%

V

40

10

39

39

38

39

0.47

1.2

97%

Zr

120

10

115

112

115

114

1.41

1.2

95%

Click here to download the Application Note in PDF format.

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4551 Zimmerman Ave
Niagara Falls, ON L2E 3M5
info@coldblock.ca.