| 摘要: |
| 本文讨论了海水水样在不同材料瓶子和不同季节(不同温度)条件下,硝酸盐和亚硝酸盐浓度在储存期间的变化。硝酸盐和亚硝酸盐浓度的减少是由于浮游植物的摄取和聚乙烯瓶的吸附;硝酸盐的增加是由于氨和亚硝酸盐氧化的结果;温度高将有助于上述过程的进行。水样中加0.3%的氯仿有助于稳定水样。实验表明,在4℃和-25℃低温下保存水样,175天内变化较小,这是比较有效的储存办法。 |
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| THE EFFECT OF STORAGE OF SEA WATER SAMPLES ON CONCENTRATIONS OF NITRATE AND NITRITE |
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| Abstract: |
| This paper discusses the concentration variations of nitrate and nitrite during storage of sea water samples in different bottles and temperatures. Decrease of concentration of nitrate and nitrite is due to the intake of phytoplankton and the adsorption of polyethylene bottles. Increase of concentration of nitrate is due to the oxidation of ammonia and nitrite. Higher temperature will accelerate the above processes. Adding 0.3% chloroform into sample will stabilize it. The experiments show that it is a good practice to keep the samples at 4℃ or -25℃. |
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