SN/T 2763.6-2014 English PDF (SNT2763.6-2014)

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SN/T 2763.6-2014: Chemical analysis of nickel laterite ore - Part 6: Determination of nickel, calcium, titanium, magnesium, copper, cobalt, chromium, zinc and phosphorus content - Inductively coupled plasma atomic emission spectrometric method
SN/T 2763.6-2014
ENTRY-EXIT INSPECTION AND QUARANTINE INDUSTRY
STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA
Chemical analysis of nickel laterite ore - Part 6:
Determination of nickel, calcium, titanium,
magnesium, copper, cobalt, chromium, zinc and
phosphorus content - Inductively coupled plasma
atomic emission spectrometric method
ISSUED ON: APRIL 09, 2014
IMPLEMENTED ON: NOVEMBER 01, 2014
Issued by: General Administration of Quality Supervision, Inspection
and Quarantine of the People's Republic of China
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Method summary ... 5 
4 Reagents ... 5 
5 Instruments and apparatuses ... 6 
6 Sample ... 6 
7 Analysis steps ... 7 
8 Result calculation ... 9 
9 Method precision ... 10 
Appendix A (Informative) Reference analytical lines of each element ... 11 
Chemical analysis of nickel laterite ore - Part 6:
Determination of nickel, calcium, titanium,
magnesium, copper, cobalt, chromium, zinc and
phosphorus content - Inductively coupled plasma
atomic emission spectrometric method
1 Scope
This Part of SN/T 2763 specifies the method for the determination of nickel,
calcium, titanium, manganese, copper, cobalt, chromium, zinc and phosphorus
contents in nickel laterite ore by inductively coupled plasma atomic emission
spectrometric method.
This Part applies to the determination of nickel, calcium, titanium, manganese,
copper, cobalt, chromium, zinc, and phosphorus in nickel laterite ore. The
determination range is shown in Table 1.
Table 1 -- Determination range
2 Normative references
The following documents are indispensable for the application of this document.
For dated references, only the dated version applies to this document. For
undated references, the latest edition (including all amendments) applies to this
document.
Element Content range %
4.9 Ferric oxide (high purity): burn in a high-temperature furnace at 1 000 °C
for 1 hour.
4.10 Magnesium oxide (spectrum pure).
4.11 Nickel, calcium, titanium, manganese, copper, cobalt, chromium, zinc and
phosphorus standard stock solutions: respectively prepare standard stock
solutions of nickel, calcium, titanium, manganese, copper, cobalt, chromium,
zinc and phosphorus elements according to the method that is specified in GB/T
602, the mass concentration of which shall be 1 000 µg/mL; or use
commercially available standard solutions directly.
4.12 Iron matrix solution (30 mg/mL): weigh 4.285 g of ferric oxide (4.9) into a
250 mL beaker; add 25 mL of hydrochloric acid (4.2); cover the watch-glass;
heat at low-temperature on a hot-plate to dissolve completely; cool; transfer into
a 100 mL volumetric flask; use water to dilute to the mark; mix well.
4.13 Magnesium oxide matrix solution (20 mg/mL): weigh 2.000 g of
magnesium oxide (4.10) into a 250 mL beaker; add 20 mL of hydrochloric acid
(4.6); cover the watch-glass; heat at low-temperature on a hot-plate to dissolve
completely; cool; transfer into a 100 mL volumetric flask; use water to dilute to
the mark; mix well.
4.14 Hydrogen (purity ≥ 99.9%).
5 Instruments and apparatuses
5.1 Inductively coupled plasma atomic emission spectrometer: it shall be able
to provide a stable plasma torch flame; the stability (short range, long range),
background equivalent concentration and detection-limit, and calibration curve
shall meet the requirements of GB/T 23942.
5.2 Hot plate: temperature control accuracy of ± 10 °C.
5.3 Analytical balance: sensitivity of 0.1 mg.
5.4 Drying oven: the temperature can be controlled at 105 °C ± 5 °C.
5.5 High-temperature furnace: the temperature shall be controlled at 600 °C ±
50 °C ~ 1 000 °C ± 50 °C.
5.6 Platinum crucible: inner volume of 30 mL.
6 Sample
6.1 The particle size of the sample shall be less than 160 µm.