不同灸材和艾材燃烧辐射的光谱特性

Spectral characteristics of burning moxa sticks

背景:临床中对艾灸的药物作用和温热作用研究较广泛,但有关艾灸红外辐射效应的研究却很少。目的:揭示传统艾灸中艾条燃烧的光谱特性。方法:选取地丁草、灯芯草、烟草及艾绒为灸材,选取不同年份及艾绒比例的南阳艾条(南阳1年1∶3、南阳3年1∶3、南阳3年1∶5、南阳3年1∶10、南阳5年1∶3、南阳5年1∶5、南阳5年1∶10、南阳10年1∶5)及蕲艾(蕲艾5年1∶5、蕲艾5年1∶10)为艾材,使用光功率计搭建光谱测量平台,分析10种艾条燃烧时的光谱特性。结果与结论:(1)地丁草、灯芯草捣碎后的燃烧性能差,未测试其光谱;烟草光谱在红外区辐射强度很小,艾绒光谱从紫外覆盖到远红外,强度大且富含丰富的红外光辐射;(2)艾条的存储年份、艾绒比例、产地、制作工艺对艾条光辐射强度影响显著,艾条辐射峰均出现在近红外波段,光谱曲线呈现先增大后减小的趋势;(3)艾绒比例与艾条光谱稳定性呈正比,相对于艾绒比例,存储年份对艾条光谱相对总强度影响更显著。通过实验获得不同灸材及不同艾材的全光谱,全面系统分析了艾条燃烧光谱特性,可为艾灸光辐射效应研究提供坚实的基础。

BACKGROUND： The drug and thermal effects of moxa-wool moxibustion have been extensively studied in the clinical trials; however, the infrared radiation effects during the moxibustion are rarely reported. OBJECTIVE： To learn the spectrum characteristics of moxa sticks in the traditional moxibustion.METHODS： The herba violae, bog rush, tobacco and moxa were chosen as experimental materials. Furthermore, the moxa sticks of different storage years（1, 3, 10 years）, proportions（1： 3, 1：5, 1：10）, and places of production（Nanyang, Qiai） were compared. A spectral measurement platform was built by using an optical power meter to analyze the spectral characteristics of the ten kinds of materials above. RESULTS AND CONCLUSION： For the different materials, the herba violae and bog rush could not burn after crushed and the infrared radiation intensity of tobacco was too low, but a strong infrared emission was from the moxa with a wide range of spectrum from ultraviolet to far infrared ray. It was also found that the year of storage, proportion, place of production as well as production process had significant effects on the radiation intensity of the moxa stick. The spectrum ascended at visible-light spectrum region, reached its peak at near-infrared region, and then descended at mid-infrared and far-infrared regions. We analyzed the stability characteristics and relative total intensity of moxa stick based on statistics and mathematics. The results showed that the stability characteristics were proportional to the proportion of moxa wool, and the year of storage had stronger effect on the relative total intensity compared with the proportion of moxa wool. Herein, we systematically analyzed the spectral characteristics of different moxa sticks, thereby providing the scientific basic data for the study on the optical radiation of moxa-wool moxibustion.