Method for measuring content of mineralizable carbon in soil

• Main Authors: HE XIUHUI, WANG QUANCAI, LAN MINGGUO, DING ZHI, CHEN JINWEI, YANG GUOJUN
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a method for measuring the content of mineralizable carbon in soil, which comprises the following steps: step 1, taking a soil sample, and measuring the content of organic carbon in the soil sample; step 2, according to a determination result of the content of organic carbon in the soil sample, using a diffusion vessel, weighing the sample, spreading the sample in an outer chamber of the diffusion vessel, adding excessive sodium hydroxide absorption liquid into an inner chamber to absorb CO2 generated by soil respiration, covering a cover, and performing constant-temperature culture and absorption of mineralizable carbon in the soil; 3, after culture is completed, the diffusion vessel is taken out, a barium chloride solution is added into the sodium hydroxide absorption liquid at the first time, stirring is conducted for full reaction, the sodium hydroxide absorption liquid is taken, a phenolphthalein indicator is added, a hydrochloric acid standard solution is used for titration till