- Detection of Gold, Silver and Copper in Waste Liquid
1 Sample solution preparation:After Ag and Cu were acidified with 1% nitric acid, they were introduced directly tested into the machine for testing;Au: 25 mL sample solut...
- Detection of Thallium Content in Wastewater Lead Block
1 Sample solution preparation:1.1Water sample could be introduced into the machine directly.1.2About 1.0g sample (precision to one-ten-thousandth) was weighed and placed in a...
- Determination of Ca, Mg, Al and Ba Content in Cored Wire
1 Sample solution preparation:0.1000g sample (precision to 0.0001g) was weighed and placed in a PTFE beaker, 5mL nitric acid was added, and HF was slowly added drop by ...
- Trace Au Analysis in Reference Materials
1 Sample solution preparation:(1)10.0g GAu-9b sample and 5.0g GAu-13a sample were weighed and placed separately in 40 mL porcelain crucible, and burned at 650 °C for...
- Determination of Palladium Content in Pd/C
1 Sample solution preparation:0.1g sample (precision to 0.0001g) was weighed and placed in a 250mL beaker, 15mL aqua regia (HCl: HNO3=3:1) was added, heated on hot plate....
- Determination of Sodium and Barium Content in Strontium Carbonate
1 Sample solution preparation:Approximately 0.4g sample (precision to 0.0001g) was weighed and placed in a 250mL beaker, 10mL deionized water was added, covered with surfac...
- Determination of Zinc and Aluminium Content in Alloys
1 Sample solution preparation:0.5g sample (precision to 0.0001g) was weighed and place in a PTFE beaker, wet with small amount of water. 10mL hydrofluoric acid, 10mL nitr...
- Determination of Pb, Ca, Ti and Al Content in Iron Powder and Tin-based Alloy Welding Powder
1 Samplesolutionpreparation:0.2g sample (precision to 0.0001g) was weighed and placed in a 250mL high neck beaker, 10mL aqua regia (HCl: HNO3= 3:1) was added, covered with...