Table 6. Results of XRF Analysis of Metallurgical Coke Standard Sample USA (Passport Value for S = 0.75 ± 0.05%).

trace elements	% wt initial analysis	% wt initial analysis (coke + Ca)	% wt iteration N3	% wt iteration N3 (coke + Ca)	% wt corrected for oxide form
Si	0.7132	0.6163	1.7858	1.5282	1.77477
Al	0.4088	0.3479	1.1457	0.7936	1.13862
Fe	0.3493	0.2373	0.984	0.8334	0.97792
S	0.2962	0.2351	0.802	0.6265	0.79705
K	0.0722	0.0483	0.2051	0.1422	0.20383
Ca	0.0466	0.0826	0.1355	0.2481	0.13466
Ti	0.0278	0.0178	0.083	0.0553	0.08249
Na	0.0243	0.0222	0.0575	0.0524	0.05714
Mg	0.0238	0.0194	0.0567	0.046	0.05635
Cr	0.0121	0.0089	0.0369	0.0283	0.03667
Cl	0.0107	0.3535	0.0301	0.9821	0.02991
Ba	0.0081	0.0047	0.0242	0.0147	0.02405
Ni	0.0042	0.0033	0.0162	0.0125	0.0161
C	98	98	94.63	94.63	89.63
ash					10.37