主營(yíng)產(chǎn)品：圓形水浴氮吹儀,平行濃縮儀,玻璃反射測(cè)試儀
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| 品牌 | 析譜 | 光譜帶寬 | 1.8nm |
|---|---|---|---|
| 波長(zhǎng)準(zhǔn)確度 | 0.5nm | 雜散光(S.L.) | 0.02%T |
| 波長(zhǎng)范圍 | 190-1100nm | 自動(dòng)程度 | 自動(dòng)波長(zhǎng) |
| 接收器類(lèi) | 光電倍增管（PMT） | 儀器結(jié)構(gòu) | 雙波長(zhǎng) |
| 價(jià)格區(qū)間 | 5千-1萬(wàn) | 應(yīng)用領(lǐng)域 | 環(huán)保,生物產(chǎn)業(yè),石油,能源,制藥 |
冷卻液氯離子自動(dòng)檢測(cè)儀紫外可見(jiàn)分光光度計(jì)介紹：
所輸入的因子個(gè)數(shù)與所選擇的曲線(xiàn)擬合方法有關(guān)，下表是其對(duì)應(yīng)關(guān)系：
曲線(xiàn)擬合方法 | 曲線(xiàn)方程表達(dá)式 | 所需輸入的因子數(shù) |
一階線(xiàn)性過(guò)零擬合 | C=K1×A | K1, r* |
一階線(xiàn)性擬合 | C=K0+K1×A | K0,K1,r* |
二階擬合 | C=K0+K1×A+K2×A2 | K0,K1,K2 |
三階擬合 | C=K0+K1×A+K2×A2+K3×A3 | K0,K1,K2,K3 |
試驗(yàn)前的準(zhǔn)備
? 將試驗(yàn)用比色皿或試管用蒸餾水或其他專(zhuān)門(mén)的清洗劑清洗干凈，并用柔軟的棉布或紙巾將其表面的手指印或滴液擦試干凈；
? 將盛參比液的比色皿放入4聯(lián)手動(dòng)樣品架（紫外可見(jiàn)分光光度計(jì)系列）或固定單個(gè)樣品架（對(duì)于雙光束紫外可見(jiàn)分光光度計(jì)）最靠近你的槽位中，再將推桿向前推到頭使比色皿正對(duì)光路，關(guān)上樣品室蓋；
Appendix B
Correction Methods
A number of correction techniques can be used to eliminate or reduce interference errors.In general,if the source of the error is known and is consistent from sample to sample.the error can be eliminated.On the other hand,if the source is unkown and varies from sample to sample,the error can be reduced but not eliminated.Correction techniques can always require data from at least two wavelengths. The more sophisticated correction techniques require multiwavelenghth or spectral data.
A.1 Isoabsorbance
When a known interfering component with a known spectrum is present,the error introduced by this component at the analytical wavelength for the target analyte can be eliminated by selecting a reference wavelength at which the interfering compound exhibits the same absorbance as it does at the analytical wavelength.The absorbance at this reference wavelength is subtracted from the absorbance at the analytical wavelength,as shown in Figure A1.The residual absorbance is the ture absorbance of the analyte.
This technique is less reliable when the spectra of the analyte and of the interferent are highly similar.Moreover,it can correct for only one interference
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