论文部分内容阅读
针对两种常见的海洋pCO2测量仪器(基于水汽平衡法的pCO2自动监测系统Underway pCO2System及采用膜分离技术实现水汽分离的pCO2原位传感器HydroC/CO2)开展了室内比对试验。通过加入Na2CO3/NaHCO3或H3PO4调节水池内水体pH值控制比对环境的pCO2,在10个水平下采集了两台仪器的测量数据,通过对同步采集水样的总溶解无机碳(DIC)、总碱度(TA)及pH测定,计算得到pCO2的理论值。通过数据分析发现3组结果间一致性很好(相关系数R2均达到0.99以上),但彼此间存在较大的“系统差”——两台仪器间测量差值在50~80μatm之间,差值的平均值及标准差s为(64.52±9.52)μatm;Underway pCO2System及HydroC/CO2与CO2sys计算值之间的差值分别在15~80μatm间及-2~-50μatm间,平均值及标准差分别为(40.67±15.88)μatm及(-23.86±14.90)μatm。
Indoor comparison tests were conducted for two common marine pCO2 measuring instruments (pCO2 automatic monitoring system based on water vapor balance method, Underway pCO2System and pCO2 homeopath sensor HydroC / CO2 for membrane separation technology). By adding Na2CO3 / NaHCO3 or H3PO4 to regulate the pCO2 of the pH value of the water in the pool to the environment, the measurement data of two instruments were collected at 10 levels. By collecting the dissolved total dissolved inorganic carbon (DIC) Alkalinity (TA) and pH determination, calculated pCO2 theoretical value. Through data analysis, it was found that the consistency among the three groups was good (the correlation coefficients R2 reached above 0.99), but there was a big “systematic difference” between them - the difference between the two instruments was between 50 and 80 μatm (64.52 ± 9.52) μatm. The differences between the calculated values of Underway pCO2System and HydroC / CO2 and CO2sys were between 15-80 μatm and -2-50 μatm, respectively, and the average and standard deviation s were The standard deviations were (40.67 ± 15.88) μatm and (-23.86 ± 14.90) μatm, respectively.