Determination of fluorine and chlorine in copper concentrate_Hunan Sundy Science and Technology Co., Ltd-Sundy,Calorimeter,Proximate Analyzer,Elemental Analyzer

1.Test procedures

Weigh approximately 0.03g of the sample into a crucible paved with quartz sand, perform the test according to the set testing procedure, and calculate the sample recovery rate.

2.Combustion conditions

Temperature: 1100℃ Oxygen: 0.4L/min

Argon(carrier): 0.2L/min Argon flow for humidification: 0.1L/min

Water vapor: 0.1L/min Absorption solution: pure water

Instrument:SDXNS200H

Combustion process

Step	Sample Introduction Time (s)	Distance (mm)	Retention Time (s)
Step 1	17	200	100
Step 1	130	30	100
Step 3	130	20	100
Step 4	250	40	350

3.IC conditions

Analytical Column: SH-AP-1 4*200mm Guard Column: SH-GP-2 4.0*50mm

Eluent: EGC KOH, 13mM, 0.7mL/min Column temp.: 35℃

Quantitative loop: 1000ul Linear range:0.1-10mg/L

Detector: SHD-3/6

4.Test results

Sample	F			Cl
Sample	Measured (mg/kg)	Theoretical (mg/kg)	Recovery (%)	Measured (mg/kg)	Theoretical (mg/kg)	Recovery (%)
Sample 1	282.05	295.07	95.59	66.39	62.39	106.41
	287.18	295.07	97.33	66.29	62.39	106.25
	283.15	295.07	95.96	67.41	62.39	108.05
	289.79	295.07	98.21	66.10	62.39	105.95
	290.11	295.07	98.32	65.31	62.39	104.68
	286.27	295.07	97.02	66.12	62.39	105.98
Aver.	286.43	295.07	97.07	66.27	62.39	106.22
RSD(%)	1.16		1.16	1.02		1.02
Sample 2	774.17	772.00	100.28	614.48	594.68	103.33
	773.72	772.00	100.22	624.06	594.68	104.94
	768.02	772.00	99.48	609.19	594.68	102.44
	772.47	772.00	100.06	613.20	594.68	103.11
	773.19	772.00	100.15	627.37	594.68	105.50
	771.99	772.00	100.00	625.48	594.68	105.18
Aver.	772.26	772.00	100.03	618.96	594.68	104.08
RSD(%)	0.29		0.29	1.23		1.23