IODP Expedition 342 Spectrophotometry

Interstitial water constitutents were measured by UV-VIS spectrometry using colorimetric methods (e.g., ammonium, nitrate, nitrite, phosphate, silica, and sulfide) by an Agilent CARY 100 UV-VIS spectrophotometer.本研究采用安捷伦CARY 100型紫外-可见分光光度计（UV-VIS spectrophotometer），以比色法为具体检测手段，依托紫外-可见分光光度法（UV-VIS spectrometry）对间隙水的组分进行测定，检测对象涵盖铵离子、硝酸根、亚硝酸根、磷酸根、硅酸与硫化物。