常見例句Experiment was done to detect NH3-N in soil by Nessler's reagent colorimetry. 進(jìn)行了用納氏試劑比色法直接測定海水中氨氮的試驗。Add 1 ml.solution C (Nessler's reagent) to 25 ml.water sample. Agitate the mixture for 20 sec. 加1亳升的C溶液(奈氏試劑)進(jìn)25亳升的樣本中,把混合液搖動20秒。Add 1 ml solution C (Nessler's reagent) to 25 ml water sample. Agitate the mixture for 20 sec. 加1亳升的C溶液(奈氏試劑)進(jìn)25亳升的樣本中,把混合液搖動20秒。Experimental results showed that the precision of ammonia electrode assay was better than that of Nessler assay. 實驗結(jié)果表明,用氨電極測定的精密度優(yōu)于用奈斯勒試劑測定的精密度。Several problems in making up Nessler's agent are mainly discussed and improving methods are also described. 主要討論了納氏試劑配制過程中出現(xiàn)的試劑過量、易出沉淀等問題;并提出了改進(jìn)意見.Main factors are as follows: standard solution, regressive curve, parallel experiment of sample, Nessler's reagent colorimetric method, spectrophotometer, sampling, etc. 影響測定結(jié)果的分量主要有:標(biāo)準(zhǔn)溶液、回歸曲線、試樣平行試驗、納氏試劑分光光度法、分光光度計,取樣等。 返回 nesslerize