| 1. | On some points for attention in the determination of ammonia
谈氨氮测定时应注意的几点问题 |
| 2. | Method for the determination of soil total nitrogen semi - micro kjeldahl method
土壤全氮测定法半微量开氏法 |
| 3. | Significance of no in distinguishing and diagnosing hydrothorax and ascites
一氧化氮测定在胸腹水鉴别诊断中的意义 |
| 4. | Analysis of ammoniacal nitrogen
氨态氮测定法 |
| 5. | Apparatus for nitrogen examination
氮测定器 |
| 6. | Test methods for quality of coal water mixture - part 12 : determination of nitrogen of coal water mixture
水煤浆质量试验方法第12部分:水煤浆氮测定方法 |
| 7. | Standard test methods for instrumental determination of carbon , hydrogen , and nitrogen in petroleum products and lubricants
石油产品及润滑剂中碳氢氮测定法 |
| 8. | Chemical analysis of sulphuric acid and oleum . determination of ammoniacal nitrogen . spectrophotometric method
硫酸和发烟硫酸的化学分析.氨氮测定.分光光度法 |
| 9. | Disturbance and elimination of digestive agent to colorimetric assay in the course of determination of total nitrogen content
总氮测定中消化剂对比色产生的干扰及消除 |
| 10. | Standard test method for trace nitrogen in liquid petroleum hydrocarbons by syringe inlet oxidative combustion and chemiluminescence detection
液态石油烃中痕量氮测定法 |
