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血清中氟以两种形态存在,即非扩散性氟(主要为蛋白结合氟)与扩散性氟(离子态氟)。直接用氟离子选择性电极测出的血清氟含量无疑是离子态氟。用氟电极测定血清氟由于受血样品量的限制未能广泛应用,适合微量样品的氟电极国内尚不多见。过去我们曾用长沙半导体材料厂生产的微碟型氟电极及普通氟电极以浓差电池方法测定血清氟,但由于这种微碟型氟电极内参比溶掺以琼脂,因此下限自5.2×10~(-6)M升至2.6×10~(-5)M升(相当0.1毫克/升至0.5毫克/升)。已高于血清离子氟的水平,因此尚需加入已知氟才能测定,复杂了测定手续。并且由于内掺琼脂的微碟型氟电极与普通氟电极的性能有所差异,因此两支氟
Serum fluorine exists in two forms, namely, non-diffusible fluorine (mainly protein-bound fluorine) and diffusible fluorine (ionic fluorine). Fluorine-selective electrode directly measured the serum fluorine content is undoubtedly ionic fluorine. Fluoride electrode determination of serum fluoride due to the limited amount of blood samples failed to be widely used, suitable for trace fluoride electrode sample is still rare in China. In the past we have used the Changsha semiconductor material factory production of micro-disk-type fluorine electrode and ordinary fluoride electrode concentration of the battery method of determination of serum fluoride, but due to this micro-disk-type fluorine electrode reference dissolved mixed with agar, so the lower limit of 5.2 × 10 ~ (-6) M to 2.6 × 10 ~ (-5) M liters (equivalent to 0.1 mg / L to 0.5 mg / L). Has been higher than the level of serum fluoride ion, so still need to join the known fluorine can be measured, complex measurement procedures. And due to agar-doped micro-disk-type fluorine electrode and ordinary fluoride electrode performance differences, so two fluorine