TS
|
No
|
DIN 12880
|
VS
|
No
|
DIN 12879
|
pH value
|
Sieved
|
Microprocessor pH meter pH 95 (WTW, Germany)
|
VFA/TIC
|
Sieved
|
Titration method according to [18]
|
TOC, TN
|
Sieved
|
TOC-VCSH/CSN with a TN unit (Shimadzu, Japan)
|
NH4–N
|
Filtered
|
DIN 38406 E5. Spektroquant® test kit (measuring range 0.01-3 mg L−1 NH4-N, Merck. Germany). photometric measurement with MultiLab P5 (WTW, Weilheim, Germany)
|
Acetate, propionate, butyrate, lactate
|
Filtered
|
High-performance liquid chromatography (Shimadzu, Japan); detector: RID-10A; column: VA 300/7.8 Nucleogel Ion 300 OA; eluent: 0.01 N H2SO4
|
Water-soluble elements (Ca, Mg, P, S, K, Na)
|
Filtered
|
Inductively coupled plasma atomic emission spectrometry ICP-AES (Spectroflame, Spectro Int., Kleve, Germany)
|