最近国外报导了一种长光程比色池。用1米长的池,灵敏度可比用普通1厘米的池提高两个数量级以上。例如以常用的磷钼蓝法测磷,不经萃取或其它富集,长光程比色池法可使检测限达2×10~(-11)克磷/毫升。灵敏度接近石墨炉原子吸收法或其它高灵敏的仪器分析技术。新的长光程池,可沿用现有的单色器和光接收系统,只需在液槽架及光源的组装上作些调整,即可使用。由于它弥补了比色法灵敏度低的缺陷,因而对其作进一步探讨并着手研制,是很有意义的。本文对长光程池的技术 Recently abroad reported a long light path than the color pool. With a 1 meter long pool, the sensitivity can be increased by more than two orders of magnitude over an average 1 cm pool. For example, the commonly used phosphomolybdate blue method is used for phosphorus determination without the extraction or other enrichment. The long optical pathlength cuvette method can limit the detection limit to 2 × 10 ~ (-11) g / ml. Sensitivity close to graphite furnace atomic absorption spectrometry or other highly sensitive instrumental analysis techniques. The new long light path pool, which can be used with existing monochromators and light receiving systems, can be used with just some adjustments to the tank rack and light source assembly. Because it makes up for the low sensitivity of colorimetric defects, so to further explore and proceed with the development of it is of great significance. This article on the long light path pool technology