1.19811

硝酸根(NO3)离子标准液

traceable to SRM from NIST NaNO₃ in H₂O 1000 mg/l NO₃ Certipur^®

• 别名: Nitrate standard for aqueous matrices ready for use
• 分類程式碼代碼: 41116107
• NACRES: NA.24

属性

• 品質等級: 100
• 技術: ion chromatography: suitable
• pH值: 6 (20 °C in H₂O)
• 密度: 1.00 g/cm³ at 20 °C
• 應用: environmental; food and beverages
• 格式: single component solution
• 儲存溫度: 15-25°C

说明

應用

• Pharmaceutical research application: Demonstrates the use of nitrate standards in evaluating the safety and efficacy of nanosilver wound dressings, providing essential data for pharmaceutical research focused on developing non-toxic materials for medical applications (Bidgoli et al., 2013).

分析報告

Concentration     β (NO₃⁻): 990 - 1010 mg/l
Determination method:   Alkalimetric titration.
The content of this solution was determined with sodium hydroxid standard solution 0.1 mol/l .The sodium hydroxide standard solution 0.1 mol/l is adjusted by hydrochloric acid standard solution 0.1 mol/L.The hydrochloric acid standard solution is standardized and traceable to volumetric standard tris(hydroxymethyl)aminomethane (article number 1.02408). The expanded measurement uncertainty is ± 1 % (k=2 coverage factor for 95% coverage probability). The certified value is traceable to primary standard NIST SRM 723 (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard tris(hydroxymethyl)aminomethane, measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025.

法律資訊

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

安全信息

• 儲存類別代碼: 12 - Non Combustible Liquids
• 水污染物質分類（WGK）: nwg