为了分析澳洲坚果花挥发油的化学组成和进一步开发利用澳洲坚果花提供科学依据，本文采用超临界CO2萃取技术提取澳洲坚果花中的挥发油，运用气相色谱-质谱（GC-MS）联用技术对其化学成分进行分离和鉴定，并用峰面积归一化法确定各组分的相对含量。结果表明：从澳洲坚果花挥发油中分离出50个色谱峰，鉴定了43个化合物，占总离子峰相对含量的87.09%。其主要由烯烃类（2.66%）、醇类（18.44%）、酚类（0.78%）、醛类（13.91%）、酮类（3.60%）、酯类（7.20%）、酸类（21.74%）及氧化物类（9.54%）等化合物组成。其化学成分主要有苯乙醇（8.75%）、4-羟基苯甲醛（6.88%）、反-吡喃型芳樟醇氧化物（6.25%）、苯乙酸（5.94%）、α-苄基苯乙醇（4.22%）、苯甲醇（3.75%）、桂酸（2.19%）、苯乙酸乙酯（1.72%）、芳樟醇（1.25%）等。

To analyze the chemical composition of volatile oil of macadamia ternifolia flowers and provide the scientific proof for further exploitation, the volatile oil was extracted by supercritical CO2 fluid in this paper. Their compositions and relative contents were quantitatively determined by GC-MS with peak area normalization method. Results showed that 50 chromatogram peaks from volatile oil of macadamia ternifolia flowers were isolated, and 43 volatile compounds were identified, which was accounted for 87.09% of total volatile compounds. These compounds included alkenes (2.66%), alcohols (18.44%), phenols (0.78%), aldehyde (13.91%), ketone (3.60%), esters (7.20%), acids (21.74%) and alkylene oxide (9.54%). The predominant volatile components were phenethyl alcohol (8.75%), 4-hydroxybenzaldehyde (6.88%), trans-linaloloxide (6.25%), phenylacetic acid (5.94%), α-phenylmethyl benzeneethanol (4.22%), benzyl alcohol (3.75%), cinnamic acid (2.19%), ethyl phenylacetate (1.72%), linalool (1.25%).