Quantification of lignin and carbohydrates in kraft pulps using analytical pyrolysis and multivariate data analysis

Analytical pyrolysis as a direct method to determine the lignin content in wood

“…Analytical pyrolysis was used to quantitatively assess content of carbohydrates [8][9][10], lignin [9,11] and extractives [17], as well as lignin composition [12][13][14][15][16] in wood and pulp.…”

“…This is the most often used method when the purpose is characterization rather than quantification. Calibration against wet-chemical data using multivariate techniques was used to assess carbohydrates and lignin in wood and pulps [2,9,19]. Absolute quantification of pyrolysis products using internal standards was also used both in on-line [20,21] and off-line systems [22].…”

Micro-pyrolysis of technical lignins in a new modular rig and product analysis by GC–MS/FID and GC×GC–TOFMS/FID

“…Additionally, other analytical methods and comprehensive data for quantification of lignin depolymerisation products are reported in literature [10,11]. Primarily, these analyses focus on selected compounds or groups of compounds.…”

Biomass Pyrolysis of Helianthus annuus Stems: Qualitative and Quantitative Study Based on Py-GC/MS

“…After 2 h of drying under 80 °C drum wind, samples were smashed using a DF-70 high-speed continuous feed mill (Gongyi, China), grinding and sieved with 80 mesh sieve, then sealed and stored until use (Kleen et al 1993). As shown in Table 1, after they were dried, Helianthus annuus stems had little moisture (5.62%) and ash (3.63%), and were mostly volatile (84.22%) except for fixed carbon (6.53%).…”