Fully Automated Self-calibrating Hybrid Flow Analyzer for Gaseous Formaldehyde
نویسندگان
چکیده
We report fully automated self-calibrating formaldehyde analyzers relying on a hybrid flow format and include operational scheme and design details. Long-term operation is made possible with the use of syringe pumps. Four identical analyzers were built and showed low LODs of 120 pptv or better (S/N =3) and good linearity over 0-50 ppbv HCHO concentration range (r > 0.9960). The analyzer can resume normal operation after short-term power failure with at most two cycles of data loss following restart. Good agreement between analyzers was observed for either indoor or outdoor
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تاریخ انتشار 2007