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目的建立微束X射线荧光光谱(μ-probe X-ray fluorescence,μ-XRF)检测电流损伤皮肤金属化的方法。方法新西兰大白兔32只,随机分为黄铜电击组、紫铜电击组、铁电击组、铝合金电击组,每组8只。电极一极固定于左后腿中部,另一极固定于左前腿,建立电击模型。提取左后腿触电部位皮肤,以及对侧右后腿相应部位皮肤作为对照,应用μ-XRF光谱仪对电流损伤皮肤内金属元素进行测定。结果正常对照组皮肤中检测出磷、氯、钾、钙元素成分;在电击组皮肤中,除正常皮肤检出的元素外,黄铜电击组检测出铜、锌元素,紫铜电击组检出铜元素,铁电击组检出铁元素,铝合金电击组检出铝元素。渗透到电流损伤皮肤内的金属元素呈不均匀分布。结论μ-XRF光谱法检测皮肤金属化可作为诊断电流损伤的特征性指标,并可为触电材料的推断提供依据。
OBJECTIVE: To establish a micro-beam X-ray fluorescence (μ-XRF) method for the detection of current-damaged skin metallization. Methods Thirty-two New Zealand white rabbits were randomly divided into three groups: brass shock group, copper shock group, iron shock group and aluminum alloy shock group. One pole of the electrode is fixed to the middle of the left hind leg and the other pole is fixed to the left front leg to establish the electric shock model. The skin of the electrocution area of the left hind leg and the skin of the corresponding part of the contralateral right hind leg were extracted as control. The metal elements in the skin with current injury were measured by μ-XRF spectrometer. Results Phosphorus, chlorine, potassium and calcium were detected in the skin of the normal control group. In the skin of the shock group, in addition to the elements detected by normal skin, the copper shock group detected the copper and zinc elements and the copper shock group detected copper Elements, iron shock group detected iron, aluminum alloy shock group detected aluminum. The metal elements infiltrated into the current damaged skin are unevenly distributed. Conclusion μ-XRF spectrometry for the detection of skin metallization can be used as a diagnostic indicator of current damage, and can provide evidence for the inference of electrocution materials.