Full Description

1.1This test method covers the analysis for commonly determined trace metals in test specimens of raw and calcined petroleum coke by inductively coupled plasma atomic emission spectroscopy.

1.2Elements for which this test method is applicable are listed in Table 1. Detection limits, sensitivity, and optimum ranges of the metals will vary with the matrices and model of spectrometer.

Element

Wavelengths, nm^{A ,B}

Concentration
Range, mg/kg^C

Aluminum

237.313, 256.799, 308.216, 396.152

15-110

Barium

455.403, 493.410

1-65

Calcium

317.933, 393.367, 396.847

10-140

Iron

259.940

40-700

Magnesium

279.079, 279.553

5-50

Manganese

257.610, 294.920

1-7

Nickel

231.604, 241.476, 352.454

3-220

Silicon

212.412, 251.611, 288.159

60-290

Sodium

588.995, 589.3, 589.592

30-160

Titanium

334.941, 337.280

1-7

Vanadium

292.402

2-480

Zinc

202.548, 206.200, 213.856

1-20

1.3This test method is applicable only to samples containing less than one mass % ash.

1.4Elements present at concentrations above the upper limit of the working ranges can be determined with additional, appropriate dilutions.

1.5The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.6This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.